New Advance in Dark Energy and Gravity

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

Deadline for manuscript submissions: 1 June 2024 | Viewed by 175

Special Issue Editor

Dr. Rui Xu
E-Mail Website
Guest Editor
Department of Astronomy, Tsinghua University, Beijing 100084, China
Interests: gravitational theories; tests of fundamental principles in gravitational theories; the evolution of binary star systems; the generation of gravitational waves under Lorentz-invariance violation; Lorentz-invariance violation in quantum gravity

Special Issue Information

Dear Colleagues,

We are pleased to invite you to contribute to this Special Issue covering new advances in dark energy and gravity. The direct evidence for the existence of dark energy comes from the expansion history of the universe deduced by modern astronomical observations including (i) the redshift–magnitude relation for type Ia supernovae, (ii) the cosmic microwave background radiation, and (iii) baryon acoustic oscillations. Besides the expansion rate of the universe, the observed large-scale structure of the universe and gravitational lensing of distant galaxies also strongly support the presence of an additional source of gravity that cannot be explained by the matter in the universe.

Theoretically, the simplest model for dark energy is the cosmological constant in Einstein field equations. It is widely believed to be the energy density of empty space. However, according to quantum field theory, the calculated value for this constant is 10^123 times larger than what the astronomical observations indicate. In fact, the energy density of empty space has been proven to have a more reasonable value, zero, in fundamental theories with unbroken supersymmetry. Then, the question becomes how the breaking of supersymmetry leads to the observed value of the cosmological constant. The study of dark energy can provide us with significant insights into the fundamental issue of vacuum energy and improve our understanding of the quantum aspect of gravity.

This Special Issue aims to publish studies of dark energy in both classical gravitational theories and quantum gravitational theories. It will help the authors share their work results in the scientific community as well as within the general public readers, and push forward studies on the roles that fundamental symmetries play in gravity. In this Special Issue, original research articles and reviews are welcome. Research areas may include (but are not limited to) the following: origin of dark energy, cosmological constant problem, dark energy with broken supersymmetry, dark energy in alternative gravitational theories, relation between dark energy and dark matter, cosmological models, simulations of large-scale structure, gravitational lensing models with dark energy. 

We look forward to receiving your contributions.

Dr. Rui Xu
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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

  • dark energy
  • cosmological constant
  • Lambda-CDM model
  • supersymmetry
  • supergravity
  • modified gravity
  • large-scale structure
  • gravitational lensing

Published Papers

This special issue is now open for submission.
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