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Special Issue "Symmetry and Quantum Gravity"
A special issue of Symmetry (ISSN 2073-8994).
Deadline for manuscript submissions: 31 March 2020.
In quantum field models of electro-weak and strong interactions, "internal" symmetries have played a fundamental role, even before the epoch of gauge theories: Just think of the isospin symmetry, current algebra, Cabibbo angle, etc. For effective theories of quantum gravity (QG), one expects spacetime symmetries to play an equally important role, not only in the weak-field expansion on a fixed background, but also when strong fluctuations of the spacetime geometry are admitted (with the ensuing conceptual/interpretation problems). The most natural approaches for describing these situations are based on functional integrals, either in the metric formalism or with Regge calculus or dynamical triangulations. Typical quantities of interest are the analogues of Wilson loops or other invariant vacuum fluctuations. We thus invite to consider such approaches, summarize their status and propose advances, also at the computational/simulation level, with special attention for the role of symmetries and their phenomenological consequences. The underlying action should be Einstein's action, possibly with addition of vacuum energy terms and with a discussion of its non-positivity properties and relations between gravitational waves and gravitons. In this context, theories "beyond spacetime" like loop QG or group QG should be considered only with regard to their "emergent spacetime" properties.
Dr. Giovanni Modanese
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 papers will be 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 1400 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.
- Quantum gravity
- effective quantum gravity
- path integrals, functional integrals
- Regge calculus
- general covariance
- metric formulation
- Einstein action