Announcements

“Black Hole Thermodynamics and Generalised Non-Extensive Entropy”
by Emilio Elizalde, Shin’ichi Nojiri and Sergei D. Odintsov
Universe 2025, 11(2), 60; https://doi.org/10.3390/universe11020060
Available online: https://www.mdpi.com/2218-1997/11/2/60

“Searching for New Physics in an Ultradense Environment: A Review on Dark Matter Admixed Neutron Stars”
by Francesco Grippa, Gaetano Lambiase and Tanmay Kumar Poddar
Universe 2025, 11(3), 74; https://doi.org/10.3390/universe11030074
Available online: https://www.mdpi.com/2218-1997/11/3/74

“Hadronic Molecules with Four Charm or Beauty Quarks”
by Wen-Ying Liu and Hua-Xing Chen
Universe 2025, 11(2), 36; https://doi.org/10.3390/universe11020036
Available online: https://www.mdpi.com/2218-1997/11/2/36

“Bayesian Analysis of Hybrid Neutron Star EOS Constraints Within an Instantaneous Nonlocal Chiral Quark Matter Model”
by Alexander Ayriyan, David Blaschke, Juan Pablo Carlomagno, Gustavo A. Contrera and Ana Gabriela Grunfeld
Universe 2025, 11(5), 141; https://doi.org/10.3390/universe11050141
Available online: https://www.mdpi.com/2218-1997/11/5/141

“Leading Logarithm Quantum Gravity”
by S. P. Miao, N. C. Tsamis and R. P. Woodard
Universe 2025, 11(7), 223; https://doi.org/10.3390/universe11070223
Available online: https://www.mdpi.com/2218-1997/11/7/223

“Quantum-Ordering Ambiguities in Weak Chern—Simons 4D Gravity and Metastability of the Condensate-Induced Inflation”
by Panagiotis Dorlis, Nick E. Mavromatos and Sotirios-Neilos Vlachos
Universe 2025, 11(1), 15; https://doi.org/10.3390/universe11010015
Available online: https://www.mdpi.com/2218-1997/11/1/15

“Non-Singular “Gauss” Black Hole from Non-Locality”
by Jens Boos
Universe 2025, 11(4), 112; https://doi.org/10.3390/universe11040112
Available online: https://www.mdpi.com/2218-1997/11/4/112

“Introduction to Thermal Field Theory: From First Principles to Applications”
by Alberto Salvio
Universe 2025, 11(1), 16; https://doi.org/10.3390/universe11010016
Available online: https://www.mdpi.com/2218-1997/11/1/16

“Anisotropic Compact Stars in General Relativity: An Exact Self-Bound Analytical Solution for Stellar Systems”
by Sunil Kumar Maurya, Ghulam Mustafa, Faisal Javed, Saibal Ray, Assmaa Abd-Elmonem and Neissrien Alhubieshi
Universe 2025, 11(2), 33; https://doi.org/10.3390/universe11020033
Available online: https://www.mdpi.com/2218-1997/11/2/33

“Revisiting Holographic Dark Energy from the Perspective of Multi-Messenger Gravitational Wave Astronomy: Future Joint Observations with Short Gamma-Ray Bursts”
by Tao Han, Ze Li, Jing-Fei Zhang and Xin Zhang
Universe 2025, 11(3), 85; https://doi.org/10.3390/universe11030085
Available online: https://www.mdpi.com/2218-1997/11/3/85

We are delighted to share a collection of highly cited papers on the Hubble tension published in Universe (ISSN: 2218-1997). In addition, some Special Issues on this topic are currently open for submission. The following is a list of articles and Special Issues that we believe may be of interest to you.

Highly cited papers:
“Generic Modification of Gravity, Late Time Acceleration and Hubble Tension”
by Mayukh R. Gangopadhyay, Shibesh K. Jas Pacif, Mohammad Sami and Mohit K. Sharma
Universe 2023, 9(2), 83; https://doi.org/10.3390/universe9020083
Available online: https://www.mdpi.com/2218-1997/9/2/83

“Hubble Tension: The Evidence of New Physics”
by Jian-Ping Hu and Fa-Yin Wang
Universe 2023, 9(2), 94; https://doi.org/10.3390/universe9020094
Available online: https://www.mdpi.com/2218-1997/9/2/94

“Running Vacuum in the Universe: Phenomenological Status in Light of the Latest Observations, and Its Impact on the σ₈ and H₀ Tensions”
by Joan Solà Peracaula, Adrià Gómez-Valent, Javier de Cruz Pérez and Cristian Moreno-Pulido
Universe 2023, 9(6), 262; https://doi.org/10.3390/universe9060262
Available online: https://www.mdpi.com/2218-1997/9/6/262

“Seven Hints That Early-Time New Physics Alone Is Not Sufficient to Solve the Hubble Tension”
by Sunny Vagnozzi
Universe 2023, 9(9), 393; https://doi.org/10.3390/universe9090393
Available online: https://www.mdpi.com/2218-1997/9/9/393

“An Effective Sign Switching Dark Energy: Lotka–Volterra Model of Two Interacting Fluids”
by Yen Chin Ong
Universe 2023, 9(10), 437; https://doi.org/10.3390/universe9100437
Available online: https://www.mdpi.com/2218-1997/9/10/437

“The Unsettled Number: Hubble’s Tension”
by Jorge L. Cervantes-Cota, Salvador Galindo-Uribarri and George F. Smoot
Universe 2023, 9(12), 501; https://doi.org/10.3390/universe9120501
Available online: https://www.mdpi.com/2218-1997/9/12/501

“A Critical Discussion on the H₀ Tension”
by Salvatore Capozziello, Giuseppe Sarracino and Giulia De Somma
Universe 2024, 10(3), 140; https://doi.org/10.3390/universe10030140
Available online: https://www.mdpi.com/2218-1997/10/3/140

“Cosmological Inference from within the Peculiar Local Universe”
by Roya Mohayaee, Mohamed Rameez and Subir Sarkar
Universe 2024, 10(5), 209; https://doi.org/10.3390/universe10050209
Available online: https://www.mdpi.com/2218-1997/10/5/209

“Gravitational Particle Production and the Hubble Tension”
by Recai Erdem
Universe 2024, 10(9), 338; https://doi.org/10.3390/universe10090338
Available online: https://www.mdpi.com/2218-1997/10/9/338

“2D BAO vs. 3D BAO: Solving the Hubble Tension with Bimetric Cosmology”
by Sowmaydeep Dwivedi and Marcus Högås
Universe 2024, 10(11), 406; https://doi.org/10.3390/universe10110406
Available online: https://www.mdpi.com/2218-1997/10/11/406

Special Issues:
“Current Status of the Hubble Tension”
Guest Editors: Prof. Dr. Giovanni Montani, Dr. Eleonora Di Valentino and Dr. Nakia Carlevaro
Submission deadline: 31 December 2025

“The 10th Anniversary of Universe: Standard Cosmological Models, and Modified Gravity and Cosmological Tensions”
Guest Editors: Prof. Dr. Panayiotis Stavrinos, Prof. Dr. Antonino Del Popolo, Prof. Dr. Hermano Velten, Prof. Dr. Tina Kahniashvili, Prof. Dr. Jean-Michel Alimi and Prof. Dr. Yi-Fu Cai
Submission deadline: 31 March 2026

“Tensions, Anomalies, and Challenges in the Standard Cosmological Model”
Guest Editors: Prof. Dr. John P. Ralston and Dr. Pavan Kumar Aluri
Submission deadline: 30 April 2026

It is with profound sadness that we share the news that Prof. Dr. George Fitzgerald Smoot, III, esteemed Advisory Board Member of Universe passed away in late September 2025.

Prof. Dr. Smoot was one of the pioneers in the observation of the cosmic microwave background (CMB), a discovery that profoundly reshaped our understanding of the universe and anchored cosmology firmly in experimental science. His groundbreaking work laid the foundation for modern cosmology and continues to inspire generations of researchers worldwide. In recognition of his contributions to our understanding of the early universe, Prof. Dr. Smoot was awarded the 2006 Nobel Prize in Physics.

As an Editorial Board Member of Universe, Prof. Dr. Smoot brought immense expertise, curiosity, and dedication to the journal. His presence enriched our community, and his insights helped guide the journal’s mission to publish high-impact research at the frontiers of physics and cosmology.

His passing leaves a profound void in the global scientific community. The Universe editorial team extends its deepest condolences to his family, friends, collaborators, and students. His scientific legacy, mentorship, and vision will continue to echo through the generations of researchers he inspired.

The Editor-in-Chief vividly remembers Prof. Dr. Smoot’s genuine humility, his willingness to receive and implement constructive comments, and his drive to repeatedly contribute to the journal, making the journal what it is today.

The Universe Editorial Office

1. “On Minimal Entanglement Wedge Cross Section for Holographic Entanglement Negativity”
by Jaydeep Kumar Basak, Vinay Malvimat, Himanshu Parihar, Boudhayan Paul and Gautam Sengupta
Universe 2024, 10(3), 125; https://doi.org/10.3390/universe10030125
Available online: https://www.mdpi.com/2218-1997/10/3/125

2. “ΛCDM Tensions: Localising Missing Physics through Consistency Checks”
by Özgür Akarsu, Eoin Ó Colgáin, Anjan A. Sen and M. M. Sheikh-Jabbari
Universe 2024, 10(8), 305; https://doi.org/10.3390/universe10080305
Available online: https://www.mdpi.com/2218-1997/10/8/305

3. “Cosmological Inference from within the Peculiar Local Universe”
by Roya Mohayaee, Mohamed Rameez and Subir Sarkar
Universe 2024, 10(5), 209; https://doi.org/10.3390/universe10050209
Available online: https://www.mdpi.com/2218-1997/10/5/209

4. “The Physics of Core-Collapse Supernovae: Explosion Mechanism and Explosive Nucleosynthesis”
by Luca Boccioli and Lorenzo Roberti
Universe 2024, 10(3), 148; https://doi.org/10.3390/universe10030148
Available online: https://www.mdpi.com/2218-1997/10/3/148

5. “2D BAO vs. 3D BAO: Solving the Hubble Tension with Bimetric Cosmology”
by Sowmaydeep Dwivedi and Marcus Högås
Universe 2024, 10(11), 406; https://doi.org/10.3390/universe10110406
Available online: https://www.mdpi.com/2218-1997/10/11/406

6. “New Parametrization of the Dark-Energy Equation of State with a Single Parameter”
by Jainendra Kumar Singh, Preeti Singh, Emmanuel N. Saridakis, Shynaray Myrzakul and Harshna Balhara
Universe 2024, 10(6), 246; https://doi.org/10.3390/universe10060246
Available online: https://www.mdpi.com/2218-1997/10/6/246

7. “Lorentzian Quantum Cosmology from Effective Spin Foams”
by Bianca Dittrich and José Padua-Argüelles
Universe 2024, 10(7), 296; https://doi.org/10.3390/universe10070296
Available online: https://www.mdpi.com/2218-1997/10/7/296

8. “The Shock Cone Instabilities and Quasi-Periodic Oscillations around the Hartle–Thorne Black Hole”
by Orhan Donmez and Fatih Dogan
Universe 2024, 10(4), 152; https://doi.org/10.3390/universe10040152
Available online: https://www.mdpi.com/2218-1997/10/4/152

9. “Screened Scalar Fields in the Laboratory and the Solar System”
by Hauke Fischer, Christian Käding and Mario Pitschmann
Universe 2024, 10(7), 297; https://doi.org/10.3390/universe10070297
Available online: https://www.mdpi.com/2218-1997/10/7/297

10. “Observational Constraints on Dynamical Dark Energy Models”
by Olga Avsajanishvili, Gennady Y. Chitov, Tina Kahniashvili, Sayan Mandal and Lado Samushia
Universe 2024, 10(3), 122; https://doi.org/10.3390/universe10030122
Available online: https://www.mdpi.com/2218-1997/10/3/122

We are thrilled to share the updated Exceptional Reviewers List 2026. This program was established to recognize and honor scholars who have consistently delivered exceptional review reports to our journal. Committed to fostering rigorous research and promoting knowledge exchange, Universe (ISSN: 2218-1997) acknowledges the vital role our reviewers play in maintaining the quality and integrity of the articles we publish. According to surveys conducted in 2025, 93% of our authors rated the peer-review process as good or excellent, reflecting the strength and effectiveness of our reviewer community.

We would like to express our sincere appreciation to all the reviewers who have generously volunteered their time and expertise to assist in Universe’s peer-review process. Their dedication and attention to detail in evaluating manuscripts, offering valuable feedback, and contributing to academic rigor are truly commendable.

The Exceptional Reviewers List was introduced in January 2026. Each quarter, we will be selecting a group of outstanding reviewers and introduce them here.

Q1

We are honored to announce that Prof. Dr. William Gerwick will serve as the Chair of the 2026 Tu Youyou Award Committee.

A world-renowned authority in marine natural products chemistry and pharmacology, Professor Gerwick is a Distinguished Professor at both the Scripps Institution of Oceanography and the Skaggs School of Pharmacy and Pharmaceutical Sciences at the University of California San Diego (UCSD). His pioneering work at the intersection of ocean sciences and drug discovery makes him a fitting leader for an award centered on transformative medicinal breakthroughs.

Under Professor Gerwick’s stewardship, the 2026 Tu Youyou Award Committee will focus on recognizing innovative and impactful research in natural products chemistry and medicinal chemistry, particularly work with the potential to drive meaningful advances in both scientific understanding and human health.

To provide further insight into his perspectives, we include below an interview with Professor Gerwick, in which he reflects on his scientific journey, his views on the field, and his vision for the Tu Youyou Award.

A Conversation with the Chair

1. Could you please introduce yourself and your research journey?

My research focuses on the natural products of marine algae and cyanobacteria, their application in medicine, their biosynthesis using genomic approaches, and innovative methods in the structure elucidation of natural products.

I received my BS degree from the University of California at Davis, my PhD from the University of California at San Diego, and conducted postdoctoral work at the University of Connecticut. After a couple of years in a junior faculty position at the Department of Chemistry at the University of Puerto Rico, I spent 21 years as Professor of Pharmacy at Oregon State University. In 2005, I returned to my PhD institution at the Scripps Institution of Oceanography and the Skaggs School of Pharmacy and Pharmaceutical Sciences at UC San Diego, where I am currently a Distinguished Professor of Oceanography and Pharmaceutical Sciences.

Throughout my career, I have been dedicated to advancing the field through both leadership and mentorship. I have served as president of the American Society of Pharmacognosy, chaired and co-chaired several major research conferences, and served as an associate editor for the Journal of Natural Products. I am a Fellow of the American Association for the Advancement of Science (AAAS) and of the American Society of Pharmacognosy. I have trained over 100 doctoral and postdoctoral students, and my research group has published nearly 500 papers and more than 25 patents on topics in the natural product sciences and medicinal chemistry.

2. What motivated you to accept the role of Chair of the 2026 Tu Youyou Award Committee?

Of course, I am a huge supporter of all awards that are given in recognition of excellent scientific research, and especially so in the natural products sciences and medicinal chemistry. However, this award is truly special in that it recognizes scientific excellence as well as impact, and is given in the name of an individual, Tu Youyou, who clearly had many challenges along the path to reach the pinnacle of her success. Not only was she the first Chinese person to win a Nobel prize in this area, but she was also the first Chinese woman to receive a Nobel prize, and this was achieved without graduate education in China or elsewhere. It’s a true testament to what can be achieved by hard work, determination, and vision. To read the history of her extraordinary approach to discovering novel antimalarial compounds from Traditional Chinese Medicine is truly inspirational. It is, therefore, the inspiration provided by the extraordinary life and career of Tu Youyou that motivated me to accept the Chair of the Award Committee for 2026.

3. How do you view the role of natural products chemistry and medicinal chemistry in today’s scientific landscape, and what major advances over the past decade have shaped this field?

A quite remarkable integration of fields is currently transforming natural products science and medicinal chemistry. In natural products, we are seeing integration of different omics methods, from metabolites to proteins to nucleic acids. Sophisticated biological and pharmacological approaches are driving the discovery of exquisitely potent and selective natural products. Advances are being made to integrate molecular-level recognition of natural products with chemical ecological studies, and sophisticated methods of structure determination using Artificial Intelligence or pioneering new tools such as microED are being applied with increasing frequency. High-level synthetic methodologies, such as protecting group-free synthetic routes, are enhancing medicinal chemistry, accelerating the identification of lead molecules with attractive pharmaceutical properties at an increasing pace.

4. How do you consider the balance between fundamental discovery (e.g., new molecules or mechanisms) and practical impact (e.g., therapeutic applications)?

Many individuals are excellent scientists and mentors, and have essential roles in developing our culture that values science and the scientific method. It should also be pointed out that not all scientific discoveries are going to have a broad societal impact, but they are nevertheless critical to the overall body and structure of science. But it is a truly remarkable individual who makes a key scientific discovery, recognizes its potential value to society in general, and then has the skills and determination to bring it forward as a useful product. That was the type of person the Tu Youyou is, and that is the type of person who is honored by the prize in her name.

5. What do you see as the key challenges or opportunities currently facing the field?

We are on the crux of an amazing revolution in many of the sciences, including natural products and medicinal chemistry; the purposeful application of Artificial Intelligence to solving many of the difficulties involved in the search for new pharmaceuticals from Nature. AI is transforming how we select organisms for study, what pharmaceutical targets to go after, rapidly resolving the chemical structures of new compounds, identifying efficient routes to their chemical synthesis, understanding their molecular mechanisms of action, and finally, designing their clinical application. The role of people in these pursuits is changing. Increasingly, the human role will be providing overall vision: what can we do? What should we do? And it is important to remember that AI is providing hypotheses, not truth. Scientists with expert domain knowledge will be critical for discerning the correctness of hypotheses put forth by AI. Altogether, advances in technology, expanding knowledge, and the appropriate use of AI methods are preparing society to be able to address emerging diseases, such as pandemics, as well as conditions that are not effectively treated by currently existing therapeutics.

6. How do you expect the Tu Youyou Award to contribute to the advancement of natural product chemistry, medicinal chemistry, and human health over the coming years?

The Tu Youyou Award is potentially transformative for the broad fields of natural products science and medicinal chemistry as it brings a significantly increased level of visibility to these topics and their contributions to human health. It will be crucial to have excellent communication to news agencies, social media and other communication outlets so that the general public is informed and educated on the high impact of these natural product/medicinal chemistry contributions. This will bring increased funding, attract promising students, and generally enrich the interface of these fields with the health sector.

7. What message would you like to convey to the research community and the public during this open nomination phase?

This prize gives broad societal visibility to the role that natural products have had in shaping a majority of our current medicines, as well as understanding the life forms with whom we share the planet. Further, it recognizes a woman scientist working under sub-optimal conditions who could persevere and make discoveries of global impact. The prize and what it represents, therefore, inspires current and future generations to engage in the study of Nature and its relationship to Human Health, to overcome adversity, and to aspire to making one’s life impactful.

About the Tu Youyou Award

Established in 2016, the Tu Youyou Award seeks to honor those who excel in the fields of natural products chemistry and medicinal chemistry. This award offers a total prize of CHF 100,000, which will be equally divided among the winners if there is more than one, with each recipient receiving an award medal and a certificate.

The 2026 Tu Youyou Award is open for nominations until 31 October 2026. We encourage all eligible candidates to participate in this prestigious recognition, as this award not only honors individual achievement but also encourages further scientific exchange, exploration and discovery in critical areas of medicine.

If you are interested in participating, please visit the Tu Youyou Award website for more information on the nomination requirements.

Our portfolio of journals available for publishing up-to-date research in immediate open access format has been further expanded. In the first quarter of 2026, nine new journals released their inaugural issues and three transferred journals released their first issue as part of MDPI, covering the subjects of clinical medicine, chemistry, computer science & mathematics, engineering, environment & ecology, and social sciences & psychology.

We extend our gratitude to the Editors-in-Chief, Associate Editors, and Editorial Board Members who will shape the future course of these brand-new journals. Each journal is dedicated to upholding strong editorial standards through a thorough peer review process, ensuring impactful open access scholarship.

Please feel free to browse and discover more about the new journals below.

We would like to thank everyone who has supported the development of open access publishing. If you would like to create a new journal, you are welcome to send an application here or contact the New Journal Committee (newjournal-committee@mdpi.com).

Conference: 2026 Asia-Pacific Regional IAU Meeting (APRIM2026)
Date: 4–8 May 2026
Location: Hong Kong, China

MDPI is excited to participate as an exhibitor at the 2026 Asia-Pacific Regional IAU Meeting, which will be held from 4 to 8 May 2026. We welcome researchers from various backgrounds to visit our booth and share their latest ideas with us.

APRIM2026 will provide all participants with an enriched and full IAU science program experience. We aim to leave a legacy of significant impact in astronomy and related sciences across the Asia Pacific through collaboration. Aware of regional and national contexts in our diverse communities, we will endeavor to make APRIM2026 in Hong Kong a happy, respectful, tolerant, collegiate and inclusive event, promote both co-operation and competitiveness across our research, and bring about innovation through strong, regional collaborations.

The following MDPI journals will be represented at the conference:

• Galaxies;
• Universe;
• Astronomy;
• Atoms;
• Dynamics;
• Physics;
• Symmetry;
• Time and Space.

If you are planning to attend this conference, please do not hesitate to start an online conversation with us. Our delegates look forward to meeting you in person at the booth and answering any questions that you may have. For more information, please visit https://aprim2026.org/.

World Quantum Day, observed annually on 14 April, celebrates the importance of quantum science and technology and raises public awareness of its role in shaping the future. The date 14 April references 4.14, the rounded first digits of Planck’s constant, a fundamental constant at the heart of quantum physics. World Quantum Day highlights how quantum research continues to expand our understanding of the universe while driving innovation across computing, communication, sensing, materials, and other emerging technologies.

In recognition of World Quantum Day, MDPI reaffirms its commitment to advancing cutting-edge and interdisciplinary research. Through open access publishing, we support the dissemination of discoveries in quantum science, applied physics, engineering, and related fields—ensuring knowledge is accessible and empowering researchers to contribute to the next generation of scientific and technological breakthroughs.

“Quantum-Spacetime Perspective on the KM3-230213A Neutrino”
by Giovanni Amelino-Camelia, Giacomo D’Amico, Giuseppe Fabiano, Domenico Frattulillo, Giulia Gubitosi, Alessandro Moia and Giacomo Rosati
Time Space 2026, 2(1), 2; https://doi.org/10.3390/timespace2010002

“Dynamics of Information Quantifiers in the Damped Rabi Oscillator”
by Flavia Pennini and Angelo Plastino
Foundations 2026, 6(1), 5; https://doi.org/10.3390/foundations6010005

“Enhanced Quantum Dot Emission in Fibonacci Photonic Crystal Cavities Optimized for PECVD-Compatible Porous Silicon: A Computational Study”
by J. E. Mastache-Mastache, M. C. González, H. Martínez and B. Reyes-Ramírez
Plasma 2026, 9(1), 1; https://doi.org/10.3390/plasma9010001

“Generalized Miller Formulae for Quantum Anharmonic Oscillators”
by Maximilian T. Meyer and Arno Schindlmayr
Dynamics 2025, 5(3), 34; https://doi.org/10.3390/dynamics5030034

“Intertwined Orders and the Physics of High Temperature Superconductors”
by Eduardo Fradkin
Particles 2025, 8(3), 70; https://doi.org/10.3390/particles8030070

“Electro-Optical Modulation of the Nonlinear Optical Response in a GaAs/AlGaAs Symmetric Multiple Quantum Well System”
by Carlos Alberto Dagua-Conda, John Alexander Gil-Corrales, Rebeca Victoria Herrero-Hahn, Miguel Eduardo Mora-Ramos, Alvaro Luis Morales and Carlos Alberto Duque
Physics 2025, 7(2), 22; https://doi.org/10.3390/physics7020022

“Measurement-Induced Symmetry Restoration and Quantum Mpemba Effect”
by Giuseppe Di Giulio, Xhek Turkeshi and Sara Murciano
Entropy 2025, 27(4), 407; https://doi.org/10.3390/e27040407

“Statistics of Quantum Numbers for Non-Equivalent Fermions in Single-j Shells”
by Jean-Christophe Pain
Atoms 2025, 13(4), 25; https://doi.org/10.3390/atoms13040025

“Quantum-Ordering Ambiguities in Weak Chern—Simons 4D Gravity and Metastability of the Condensate-Induced Inflation”
by Panagiotis Dorlis, Nick E. Mavromatos and Sotirios-Neilos Vlachos.
Universe 2025, 11(1), 15; https://doi.org/10.3390/universe11010015

“A Comprehensive Review of Quantum Circuit Optimization: Current Trends and Future Directions”
by Krishnageetha Karuppasamy, Varun Puram, Stevens Johnson and Johnson P. Thomas
Quantum Rep. 2025, 7(1), 2; https://doi.org/10.3390/quantum7010002

“Magnetic Hopfions: A Review”
by Konstantin Guslienko
Magnetism 2024, 4(4), 383-399; https://doi.org/10.3390/magnetism4040025

“de Broglie, General Covariance and a Geometric Background to Quantum Mechanics”
by Basil Hiley and Glen Dennis
Symmetry 2024, 16(1), 67; https://doi.org/10.3390/sym16010067

“Quantum Optics: Communication, Sensing, Computing, and Simulation” Guest Editors: Dr. Peng Xu, Prof. Dr. Dong Wang, Dr. Wei Xiong Deadline for submissions: 20 June 2026	“Quantum Theory 100 Years Later: Advances on Foundations and Applications” Guest Editors: Prof. Dr. Iver H. Brevik, Prof. Dr. Roberto Passante and Prof. Dr. Akbar Salam Deadline for submissions: 30 June 2026
“Superconducting Spin Dynamics and Quantum Effects” Guest Editor: Dr. Yunyan Yao Deadline for submissions: 30 June 2026	“New Horizons in Antiferromagnetic Spintronics: Exotic Ground States and Device Prospects” Guest Editors: Dr. Pingfan Gu, Dr. Yuxuan Peng and Dr. Shiqi Yang Deadline for submissions: 31 July 2026
“Quantum Technologies in Cold Atomic Systems” Guest Editor: Dr. Andrea Richaud Deadline for submissions: 31 August 2026	“Photoacoustic Imaging and Sensing: New Developments and Horizons” Guest Editors: Dr. Mario Siciliani de Cumis, Dr. Stefano Dello Russo and Dr. Jacopo Pelini Deadline for submissions: 20 October 2026

“The 2nd Electronic Conference on Universe” Organizers: MDPI and Universe Volume Editor: Lorenzo Iorio Highlights “Quantum Gravitational Non-Singular Tunneling Wavefunction Proposal” by Meysam Motaharfar and Parampreet Singh “A Rotating Model of a Light Speed Expanding Hubble-Hawking Universe” by U. V. Satya Seshavatharam and S. Lakshminarayana Click here to read the full list of papers.