Symmetries in General Relativity and Quantum Gravity
A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".
Deadline for manuscript submissions: 31 May 2024 | Viewed by 978
Special Issue Editors
Interests: loop quantum gravity; quantum cosmology; group theory; quantum gravity
Special Issue Information
Dear Colleagues,
Symmetries are important tools for the study of GR and QG, since symmetry-reduced models play an important role. When the spacetime metric is invariant under finite Lie group transformations or under two-dimensional diffeomorphism transformations, one obtains tractable models, which can be a cosmological mini-superspace model or a 2D field theory model for a black hole formation.
Another use of symmetries is to assume that the diffeomorphism invariance is valid at large distances, while at the Planck length scales, we have some other symmetry. One way to achieve this is by changing the spacetime manifold structure, and some of the current approaches are:
- Changing the smooth manifold to a piecewise linear manifold and conserving the local Lorentz invariance. This yields the spin foam and Regge state-sum/state-integral models of QG;
- Replacing the local Lorentz group with some categorical group or a quantum group;
- Using a noncommutative manifold.
In this Special Issue, we welcome the submission of papers on the following topics:
- Classical and quantum mini-superspace models;
- Classical and quantum midi-superspace models;
- 2D models of black holes;
- Higher gauge theory formulations of GR;
- State-sum models of QG;
- Noncommutative geometry formulations of GR.
Papers on related topics will be also considered—for example, deformed GR theories.
Prof. Dr. Aleksandar Mikovic
Prof. Dr. Maja Burić
Guest Editors
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
- mini-superspace models
- midi-superspace models
- 2D dilation gravity models
- higher gauge theory
- state-sum models
- noncommutative geometry
- deformed GR
