Gravitational Physics and Symmetry

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".

Deadline for manuscript submissions: 30 April 2026 | Viewed by 2039

Special Issue Editors


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Guest Editor
Departamento de Física, Universidade Federal do Maranhão, Campus Universitário do Bacanga, São Luís 65080-805, MA, Brazil
Interests: black holes; holographic complexity; string theory; entanglement entropy; AdS/BCFT correspondence; and Horndeski gravity

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Guest Editor
Basic Science Faculty, Catholic University of Maule, Casilla, Talca 617, Chile
Interests: general relativity; high energy physics theory; black holes

Special Issue Information

Dear Colleagues,

Gravitational physics and symmetry are fundamental areas of research in modern physics, providing insights into the nature of the universe and the fundamental forces that govern it. From Einstein's theory of general relativity to the study of black holes, gravitational waves, and cosmology, this field has revolutionized our understanding of space, time, and matter. Symmetry, on the other hand, plays a crucial role in theoretical physics, offering a framework to understand conservation laws, particle interactions, and the unification of forces. The interplay between gravitational physics and symmetry continues to inspire groundbreaking research, making it a vital area of study with profound implications for both theoretical and experimental physics.

This Special Issue aims to bring together cutting-edge research and reviews in the field of gravitational physics and symmetry. The objective is to provide a platform for researchers to share their latest findings, foster collaboration, and explore new directions in this dynamic field. The subject aligns with the journal's scope by focusing on the theoretical and experimental aspects of physics, particularly those that contribute to our understanding of fundamental forces and the structure of the universe. The scope of this Special Issue is carefully defined to ensure a focused yet comprehensive collection of articles, targeting at least 10 high-quality contributions. If this goal is achieved, the Special Issue may also be published in book form, further enhancing its impact.

In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following:

  • Gravitational waves and their detection;
  • Black hole physics and singularities;
  • Cosmology and the large-scale structure of the universe;
  • Theoretical developments in general relativity;
  • Symmetry principles in gravitational theories;
  • Quantum gravity and the unification of forces;
  • Experimental tests of gravitational theories;
  • Applications of symmetry in particle physics and cosmology;
  • Mathematical frameworks for symmetry and gravitation;
  • Interdisciplinary approaches to gravitational physics and symmetry.

Dr. Fabiano F. Santos
Dr. Moisés Felipe Bravo-Gaete
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Symmetry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • gravitational waves and their detection
  • black hole physics and singularities
  • cosmology and the large-scale structure of the universe
  • theoretical developments in general relativity
  • symmetry principles in gravitational theories
  • quantum gravity and the unification of forces
  • experimental tests of gravitational theories
  • applications of symmetry in particle physics and cosmology
  • mathematical frameworks for symmetry and gravitation
  • interdisciplinary approaches to gravitational physics and symmetry

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Published Papers (3 papers)

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Research

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20 pages, 1654 KB  
Article
Complexity Hierarchies in Euclidean Stars
by Luis Herrera, Alicia Di Prisco and Justo Ospino
Symmetry 2025, 17(9), 1517; https://doi.org/10.3390/sym17091517 - 11 Sep 2025
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Abstract
We establish a hierarchy of Euclidean stars according to their degree of complexity, as measured by the complexity factor and the complexity of the pattern of evolution. We consider both, non-dissipative and dissipative systems. Solutions range from the simplest one, in order of [...] Read more.
We establish a hierarchy of Euclidean stars according to their degree of complexity, as measured by the complexity factor and the complexity of the pattern of evolution. We consider both, non-dissipative and dissipative systems. Solutions range from the simplest one, in order of increasing complexity. Some specific models are found and analyzed in detail. Full article
(This article belongs to the Special Issue Gravitational Physics and Symmetry)
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13 pages, 1400 KB  
Article
Propagation of Tensor Perturbation in Horndeski-like Gravity
by Fabiano F. Santos and Jackson Levi Said
Symmetry 2025, 17(5), 675; https://doi.org/10.3390/sym17050675 - 28 Apr 2025
Viewed by 731
Abstract
Scalar–tensor theories have shown promise in many sectors of cosmology. However, recent constraints from the speed of gravitational waves have put severe limits on the breadth of models such classes of theories can realize. In this work, we explore the possibility of a [...] Read more.
Scalar–tensor theories have shown promise in many sectors of cosmology. However, recent constraints from the speed of gravitational waves have put severe limits on the breadth of models such classes of theories can realize. In this work, we explore the possibility of a Horndeski Lagrangian that is equipped with two dilaton fields. The evolution of a two-dilaton coupled cosmology is not well known in the literature. We explore the tensor perturbations in order to assess the behavior of the model against the speed of the gravitational wave constraint. Our main result is that this model exhibits a class of cosmological theories that is consistent with this observational constraint. Full article
(This article belongs to the Special Issue Gravitational Physics and Symmetry)
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Review

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21 pages, 3150 KB  
Review
Stellar-Mass Black Holes
by Cosimo Bambi
Symmetry 2025, 17(9), 1393; https://doi.org/10.3390/sym17091393 - 26 Aug 2025
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Abstract
Stellar-mass black holes (3 MMBH150 M) are the natural product of the evolution of heavy stars (Mstar20 M). In our Galaxy, we expect that 108 [...] Read more.
Stellar-mass black holes (3 MMBH150 M) are the natural product of the evolution of heavy stars (Mstar20 M). In our Galaxy, we expect that 108109 stellar-mass black holes have been formed from the gravitational collapse of heavy stars, but currently we know fewer than 100 objects. We also know of ∼100 stellar-mass black holes in other galaxies, most of them discovered by gravitational wave observatories in the past 10 years. The detection of black holes is indeed extremely challenging and possible only in very special cases. This article is a short review on the physics and astrophysics of stellar-mass black holes, including Galactic and extragalactic black holes in X-ray binaries, black holes in astrometric binaries, isolated black holes, and black holes in compact binaries. The article also addresses some important open issues and introduces the idea of a possible interstellar mission to the closest black hole. Full article
(This article belongs to the Special Issue Gravitational Physics and Symmetry)
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