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  • Article
  • Open Access
1 Citations
2,208 Views
10 Pages

Classical-Quantum Transition as a Disorder-Order Process

  • Andres M. Kowalski and
  • Angelo Plastino

5 January 2022

We associate here the relationship between de-coherence to the statistical notion of disequilibrium with regards to the dynamics of a system that reflects the interaction between matter and a given field. The process is described via information geom...

(This article belongs to the Special Issue Quantum Mechanics and Its Foundations II)
  • Communication
  • Open Access
2 Citations
3,079 Views
9 Pages

In this paper, we study the corrections to the Friedmann equations due to fast fluctuations in the universe scale factor. Such fast quantum fluctuations were recently proposed as a potential solution to the cosmological constant problem. They also in...

(This article belongs to the Special Issue Quantum Models for Cosmology)
  • Review
  • Open Access
6 Citations
7,545 Views
28 Pages

There is a formal analogy between the evolution of the universe, when it is seen as a trajectory in the minisuperspace, and the worldline followed by a test particle in a curved spacetime. The analogy can be extended to the quantum realm, where the t...

  • Article
  • Open Access
4 Citations
2,829 Views
7 Pages

Decoherence, Anti-Decoherence, and Fisher Information

  • Andres M. Kowalski and
  • Angelo Plastino

12 August 2021

In this work, we study quantum decoherence as reflected by the dynamics of a system that accounts for the interaction between matter and a given field. The process is described by an important information geometry tool: Fisher’s information measure (...

(This article belongs to the Special Issue Information Geometry, Complexity Measures and Data Analysis)
  • Article
  • Open Access
2 Citations
1,617 Views
19 Pages

11 September 2024

Within the framework of symmetric teleparallel fQ-gravity, using a connection defined in the non-coincidence gauge, we derive the Wheeler–DeWitt equation of quantum cosmology. The gravitational field equation in fQ-gravity permits a minisupersp...

(This article belongs to the Special Issue Mathematical Cosmology)
  • Review
  • Open Access
13 Citations
6,577 Views
42 Pages

26 July 2020

A review and perspective is presented of the classical, semi-classical and fully quantum routes to the simulation of electro-thermal phenomena in ultra-scaled silicon nanowire field-effect transistors. It is shown that the physics of ultra-scaled dev...

(This article belongs to the Special Issue Nanowire Field-Effect Transistor (FET))
  • Review
  • Open Access
753 Views
16 Pages

8 June 2026

We revisit quantum field theory in curved spacetime (QFTCS) as a semi-classical framework for quantum matter on classical geometries, emphasizing its limitations, including vacuum ambiguity and background dependence. We briefly review major approache...

(This article belongs to the Special Issue Mathematical Aspects of Quantum Field Theory and Quantization, 2nd Edition)
  • Article
  • Open Access
4 Citations
4,663 Views
28 Pages

7 August 2020

A “time”-covariant Schrödinger equation is defined for the minisuperspace model of the Reissner–Nordström (RN) black hole, as a “hybrid” between the “intrinsic time” Schrödinger and Wheeler&nda...

(This article belongs to the Special Issue Exclusive Feature Papers of Quantum Reports)
  • Article
  • Open Access
7 Citations
4,148 Views
14 Pages

A Schmidt Decomposition Approach to Quantum Thermodynamics

  • André Hernandes Alves Malavazi and
  • Frederico Brito

12 November 2022

The development of a self-consistent thermodynamic theory of quantum systems is of fundamental importance for modern physics. Still, despite its essential role in quantum science and technology, there is no unifying formalism for characterizing the t...

(This article belongs to the Special Issue Thermodynamics in Quantum and Mesoscopic Systems)
  • Article
  • Open Access
2 Citations
2,508 Views
18 Pages

This article presents a theoretical study of the optical and transport properties of metals. Iron, as an example, was used to discuss, through a theoretical description, the peculiarities of these properties in the compressed and expanded states unde...

(This article belongs to the Topic Applications of Photonics, Laser, Plasma and Radiation Physics)
  • Article
  • Open Access
4 Citations
3,814 Views
14 Pages

Mode Splitting Induced by Mesoscopic Electron Dynamics in Strongly Coupled Metal Nanoparticles on Dielectric Substrates

  • Katarzyna Kluczyk-Korch,
  • Lucjan Jacak,
  • Witold Aleksander Jacak and
  • Christin David

27 August 2019

We study strong optical coupling of metal nanoparticle arrays with dielectric substrates. Based on the Fermi Golden Rule, the particle–substrate coupling is derived in terms of the photon absorption probability assuming a local dipole field. An...

(This article belongs to the Special Issue Nanoparticles for Photovoltaics)
  • Proceeding Paper
  • Open Access
1,792 Views
4 Pages

Coherence Effects in Multiple Medium-Induced Radiation

  • Fabio Dominguez,
  • Jose Guilherme Milhano,
  • Carlos A. Salgado,
  • Konrad Tywoniuk and
  • Victor Vila

In the first part of this work we study the color coherence phenomenon by considering the well-known quark-antiquark antenna with an in-medium hard gluon emission and an extra very soft emission outside it—double antenna. By discussing the cohe...

(This article belongs to the Proceedings of Hot Quarks 2018—Workshop for Young Scientists on the Physics of Ultrarelativistic Nucleus-Nucleus Collisions)
  • Article
  • Open Access
3 Citations
2,035 Views
14 Pages

The pcGR Within the Hořava-Lifshitz Gravity and the Wheeler-deWitt Quantization

  • Peter O. Hess,
  • César A. Zen Vasconcellos and
  • Dimiter Hadjimichef

1 August 2025

We investigate pseudo-complex General Relativity (pcGR)—a coordinate-extended formulation of General Relativity (GR)—within the framework of Hořava-Lifshitz gravity, a regularized theory featuring anisotropic scaling. The pcGR framew...

  • Article
  • Open Access
522 Views
15 Pages

14 July 2026

Single-electron emission from the coronene (C24H12) molecule induced by the impact of 100 keV H+ projectiles is investigated using the continuum distorted wave–eikonal initial state approximation within a semi-classical impact-parameter framewo...

(This article belongs to the Special Issue Electronic Dynamics in Atomic and Molecular Collisions)
  • Article
  • Open Access
8 Citations
4,233 Views
14 Pages

Fine Tuning the Intermolecular Interactions of Water Clusters Using the Dispersion-Corrected Density Functional Theory

  • Alfonso Ferretti,
  • Laura Canal,
  • Robert A. Sorodoc,
  • Sourab Sinha and
  • Giuseppe Brancato

30 April 2023

Dispersion-inclusive density functional theory (DFT) methods have unequivocally demonstrated improved performances with respect to standard DFT approximations for modeling large and extended molecular systems at the quantum mechanical level. Yet, in...

(This article belongs to the Topic Theoretical, Quantum and Computational Chemistry)
  • Review
  • Open Access
18 Citations
4,133 Views
23 Pages

In this paper we would like to highlight the problems of conceiving the “Hydrogen Bond” (HB) as a real short-range, directional, electrostatic, attractive interaction and to reframe its nature through the non-approximated view of condense...

(This article belongs to the Special Issue The Emerging Role of Quantum Sciences and Radiation Biology in Biomedical Applications)
  • Article
  • Open Access
6 Citations
3,940 Views
16 Pages

16 September 2022

The creation of electromagnetic energy may be realised by engineering a device with a method of transduction, which allows an external energy source, such as mechanical, chemical, nuclear, etc., to be impressed into the electromagnetic system through...

(This article belongs to the Section Physical Sensors)
  • Review
  • Open Access
1,240 Views
17 Pages

In the last decade, significant progress has been made in understanding the crucial role of melanin in energy production in cells and tissues (which has been estimated to account for up to 90% of the total in organisms). This suggests the need to rec...

  • Review
  • Open Access
30 Citations
15,265 Views
125 Pages

10 November 2009

The density matrix theory, the ancestor of density functional theory, provides the immediate framework for Path Integral (PI) development, allowing the canonical density be extended for the many-electronic systems through the density functional closu...

(This article belongs to the Special Issue Applications of Density Functional Theory)
  • Article
  • Open Access
2 Citations
942 Views
19 Pages

10 December 2025

We present a time-dependent nonperturbative theory of the reconstruction of attosecond beating by interference of multiphoton transitions (RABBIT) for photoelectron emission from hydrogen atoms in the transverse direction relative to the laser polari...

  • Article
  • Open Access
5 Citations
5,743 Views
16 Pages

The program TFF calculates stripping single-particle form factors for one-neutron transfer in prior representation with appropriate perturbative treatment of recoil. Coupled equations are then integrated along a semiclassical trajectory to obtain one...

(This article belongs to the Section Computational Engineering)
  • Article
  • Open Access
1 Citations
1,055 Views
49 Pages

15 May 2026

This work proposes that fundamental physics remains unchanged, but its local classical representability is limited by the finite entropic capacity of causal horizons. Geometric entanglement entropy is treated as a thermodynamic potential, and horizon...

(This article belongs to the Section Thermodynamics)
  • Article
  • Open Access
31 Citations
6,536 Views
109 Pages

17 January 2022

This is a pedagogical introduction to the physics of confinement on R3×S1, using SU(2) Yang–Mills with massive or massless adjoint fermions as the prime example; we also add fundamental flavours to conclude. The small-S1 limit is remarkab...

(This article belongs to the Special Issue New Applications of Symmetry in Lattice Field Theory)
  • Article
  • Open Access
5 Citations
2,052 Views
12 Pages

We discuss the problem of electron transfer (ET) in mixed valence (MV) molecules that is at the core of molecular Quantum Cellular Automata (QCA) functioning. Theoretical modelling of tetrameric bi-electronic MV molecular square (prototype of basic Q...

  • Feature Paper
  • Article
  • Open Access
729 Views
14 Pages

23 May 2026

Previous 1+1-dimensional Dirac wavepacket calculations showed that the tunneling component of a relativistic electron wavepacket can generate an arrival-time distribution whose peak occurs earlier than the corresponding free-photon peak. However, ada...

(This article belongs to the Section Time)
  • Article
  • Open Access
11 Citations
4,105 Views
16 Pages

Evolution Equations for Quantum Semi-Markov Dynamics

  • Nina Megier,
  • Andrea Smirne and
  • Bassano Vacchini

21 July 2020

Using a newly introduced connection between the local and non-local description of open quantum system dynamics, we investigate the relationship between these two characterisations in the case of quantum semi-Markov processes. This class of quantum e...

(This article belongs to the Special Issue Open Quantum Systems (OQS) for Quantum Technologies)
  • Article
  • Open Access
14 Citations
3,241 Views
13 Pages

We discuss the quantization in the minisuperspace for the generalized fourth-order teleparallel cosmological theory known as fT, B. Specifically we focus on the case where the theory is linear on the torsion scalar, in that consideration we are...

(This article belongs to the Special Issue Teleparallel Gravity: Foundations and Observational Constraints)
  • Article
  • Open Access
18 Citations
4,791 Views
15 Pages

Near Solidus Forming (NSF): Semi-Solid Steel Forming at High Solid Content to Obtain As-Forged Properties

  • Jokin Lozares,
  • Gorka Plata,
  • Iñaki Hurtado,
  • Andrea Sánchez and
  • Iñigo Loizaga

30 January 2020

Near solidus forming (NSF) of steels is a novel process under the umbrella of semi-solid forming technologies midway between classical hot forging and semi-solid technologies. This article presents the work done at Mondragon Unibertsitatea to develop...

(This article belongs to the Special Issue Net-Shape Die Casting of Semi-solid Alloys)
  • Article
  • Open Access
2 Citations
938 Views
14 Pages

23 October 2025

In this paper, we study Hahn’s problem with respect to a Dunkl-perturbed raising operator. More precisely, we prove that, up to a dilation, the generalized Hermite polynomials are the only Tμ,α-classical symmetric orthogonal polynomial...

(This article belongs to the Section C: Mathematical Analysis)
  • Article
  • Open Access
3 Citations
4,631 Views
13 Pages

23 December 2024

The precise description of the roles and qualifications of Saudi judges (qāḍī) in the legal process assist in understanding the actual practice of jurisprudence. This paper aims to shed light on the jurisprudential procedure and the responsibilities...

(This article belongs to the Special Issue Religion and Politics: Historical Developments and Contemporary Transformations)
  • Article
  • Open Access
780 Views
23 Pages

Curvature–Cohomology Criterion for Projectivity: A Synthesis of Classical Results in Hodge Theory

  • Ghaliah Alhamzi,
  • Mona Bin-Asfour,
  • Emad Solouma,
  • Abdullah Alahmari and ,
  • Mansoor Alsulami and
  • Sayed Saber
  • + 1 author+ 0 author

6 April 2026

This paper synthesizes classical results in Hodge theory, curvature positivity, and vanishing theorems to give a concise curvature–cohomology criterion for the projectivity of compact Kähler manifolds. While each analytic component—Y...

(This article belongs to the Special Issue Recent Advances in Complex Analysis and Applications, 2nd Edition)
  • Article
  • Open Access
27 Citations
6,929 Views
17 Pages

Kinetic and Exchange Energy Densities near the Nucleus

  • Lucian A. Constantin,
  • Eduardo Fabiano and
  • Fabio Della Sala

We investigate the behavior of the kinetic and the exchange energy densities near the nuclear cusp of atomic systems. Considering hydrogenic orbitals, we derive analytical expressions near the nucleus, for single shells, as well as in the semiclassic...

(This article belongs to the Special Issue 50th Anniversary of the Kohn-Sham Theory—Advances in Density Functional Theory)
  • Article
  • Open Access
2 Citations
1,713 Views
19 Pages

25 September 2025

Just as Gauss’s interpretation of complex numbers as points in a number plane in the form of a suitably formulated axiom found its way into the vector representation of Fourier transforms, this is the case with Euler’s formula and Riemann...

(This article belongs to the Section B: Mathematics)
  • Article
  • Open Access
497 Views
17 Pages

We develop a Bohmian analysis of a two-dimensional ghost Hamiltonian and its mapping to the degenerate Pais-Uhlenbeck model. Using Gaussian wavepackets, we derive the corresponding guidance equations, the centre and width evolution, and the quantum p...

(This article belongs to the Section Foundations of Quantum Mechanics and Quantum Gravity)
  • Article
  • Open Access
258 Views
19 Pages

The Attoclock in Laser-Assisted Atomic Photoionization

  • Renata Della Picca,
  • Juan M. Randazzo,
  • Sebastián D. López,
  • Marcelo F. Ciappina and
  • Diego G. Arbó

27 October 2026

Measuring the timing of photoionization requires understanding how light-driven electron motion is encoded in the detected electron distribution. In this work, we present a theoretical study of a laser-assisted attoclock, in which a short extreme-ult...

(This article belongs to the Special Issue Electronic Dynamics in Atomic and Molecular Collisions)
  • Article
  • Open Access
2 Citations
2,967 Views
14 Pages

21 November 2020

A new method of line shape calculations of hydrogen-like atoms in magnetized plasmas is presented. This algorithm makes it possible to solve two fundamental problems in the broadening theory: the analytical description of the radiation transition arr...

(This article belongs to the Special Issue New Trends in Plasma Physics)
  • Article
  • Open Access
9 Citations
5,725 Views
34 Pages

17 October 2016

We consider the nature of quantum properties in non-relativistic quantum mechanics (QM) and relativistic quantum field theories, and examine the connection between formal quantization schemes and intuitive notions of wave-particle duality. Based on t...

  • Article
  • Open Access
14 Citations
4,254 Views
10 Pages

Lemaître Class Dark Energy Model for Relaxing Cosmological Constant

  • Irina Dymnikova,
  • Anna Dobosz and
  • Bożena Sołtysek

Cosmological constant corresponds to the maximally symmetric cosmological term with the equation of state p = − ρ . Introducing a cosmological term with the reduced symmetry, p r = − ρ in the spherically symmetric case, makes cosmolo...

(This article belongs to the Special Issue Varying Constants and Fundamental Cosmology)
  • Article
  • Open Access
3 Citations
2,099 Views
18 Pages

Can Effects of a Generalized Uncertainty Principle Appear in Compact Stars?

  • João Gabriel Galli Gimenez,
  • Dimiter Hadjimichef,
  • Peter Otto Hess,
  • Marcelo Netz-Marzola and
  • César A. Zen Vasconcellos

26 December 2024

In the present contribution, a preliminary analysis of the effects of the Generalized Uncertainty Principle (GUP) with a minimum length, in the context of compact stars, is performed. On basis of a deformed Poisson canonical algebra with a parametriz...

(This article belongs to the Special Issue Studies in Neutron Stars)
  • Article
  • Open Access
6 Citations
3,551 Views
13 Pages

13 September 2020

The approach based on the Wigner function is considered as a viable model of quantum transport which allows, in analogy with the semiclassical Boltzmann equation, to restore a description in the phase-space. A crucial point is the determination of th...

  • Review
  • Open Access
18 Citations
4,050 Views
59 Pages

16 April 2021

The instability of electron-positron vacuum in strong electric fields is studied. First, falling to the Coulomb center is discussed at Z>137/2 for a spinless boson and at Z>137 for electron. Subsequently, focus is concentrated on description of...

(This article belongs to the Section Field Theory)
  • Article
  • Open Access
2 Citations
3,265 Views
23 Pages

7 February 2020

To simplify the design and optimization of new-generation nanomaterials and related electronic and optoelectronic quantum devices, energy dissipation versus decoherence phenomena are often simulated via local models based on the Wigner-function forma...

(This article belongs to the Section Quantum Science and Technology)
  • Proceeding Paper
  • Open Access
4 Citations
2,958 Views
9 Pages

The new Circular Economy System requires an innovative approach to the management of information. The FiberEUse IT platform is a solution that enables the exchange of information among stakeholders that works into and across the glass and carbon fibe...

(This article belongs to the Proceedings of The 8th Annual International Sustainable Places Conference (SP2020) Proceedings)
  • Article
  • Open Access
1 Citations
2,954 Views
11 Pages

14 March 2019

Evaluation and correlation of global quantities, i.e., normal and tangential hardness, at scratch testing in the context of a representative stress description was investigated. In particular, verification based on experimental results is at issue. I...

  • Article
  • Open Access
1,773 Views
30 Pages

28 May 2026

This work formulates semiclassical gravity within a causal-diamond framework where a finite-resolution boundary provides the edge structure for a local Wheeler–DeWitt description. Because the diffeomorphism-invariant Hilbert space does not fact...

(This article belongs to the Section Quantum Information)
  • Article
  • Open Access
287 Views
38 Pages

SimulH: A Semiclassical Monte Carlo Framework for Transport Modeling in Monolayer Graphene Field-Effect Transistors

  • Modesto Herrera-González,
  • Jaime Martínez-Castillo,
  • Enrique Delgado-Alvarado,
  • Pedro Mabil-Espinosa and ,
  • Agustín L. Herrera-May,
  • Edmundo Antonio Gutiérrez Domínguez and
  • Pedro J. García-Ramírez
  • + 2 authors+ 0 author

We present SimulH, a semiclassical Monte Carlo framework developed to model carrier transport in monolayer graphene field-effect transistors (GFETs), where achieving both physical accuracy and computational efficiency remains a key challenge for high...

(This article belongs to the Section Electrical Technologies)
  • Article
  • Open Access
3 Citations
2,898 Views
16 Pages

21 April 2021

A framework for the stochastic description of relaxation processes in flexible macromolecules including dissipative effects has been recently introduced, starting from an atomistic view, describing the joint relaxation of internal coordinates and glo...

(This article belongs to the Special Issue Reactivity and Properties of Radicals and Radical Ions)
  • Article
  • Open Access
1 Citations
2,103 Views
22 Pages

Comparative Evaluation of Mathematical Model and In Vivo Study of Calcium Phosphate Bone Grafts

  • Mikhail A. Shlykov,
  • Polina V. Smirnova,
  • Anatoliy S. Senotov,
  • Anastasia Yu. Teterina and ,
  • Vladislav V. Minaychev,
  • Igor V. Smirnov,
  • Roman A. Novikov,
  • Ekaterina I. Marchenko,
  • Pavel S. Salynkin and
  • Irina S. Fadeeva
  • + 7 authors+ 2 authors

6 December 2024

One of the key factors of the interaction ‘osteoplastic material—organism’ is the state of the implant surface. Taking into account the fact that the equilibrium in regeneration conditions is reached only after the reparative histog...

  • Perspective
  • Open Access
1,208 Views
12 Pages

8 March 2026

The accurate description of nonadiabatic quantum molecular dynamics represents one of the most significant challenges in modern computational chemistry, serving as a gateway to understanding complex phenomena ranging from photochemistry and electron...

(This article belongs to the Section Quantum Chemistry, Computational Chemistry and Molecular Physics)
  • Article
  • Open Access
608 Views
15 Pages

10 June 2026

We develop an analytical framework to describe the impact of in-plane strain on the electronic and transport properties of graphene. Starting from a strain-modified nearest-neighbor tight-binding model, we derive the energy spectrum and group velocit...

(This article belongs to the Section C: Physics)

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