Special Issue "Symmetry in Cosmology"
Deadline for manuscript submissions: closed (31 December 2018) | Viewed by 10303
Interests: mathematical physics; cosmology; general relativity; conservation laws; lie algebra; fundamental symmetry
Special Issues, Collections and Topics in MDPI journals
Symmetries is perhaps the strongest tool of physics and applied mathematics available for the manipulation of differential equations and the determination of actual solutions. They provide two major elements of significant importance:a. The invariant quantities which constitute the best variables for the study of a specific dynamical system and can be used to reduce the order of a differential equation or reduce the number of variables.
b. Conserved currents which define surfaces in phase space, on which the evolution of the differential equation is constrained and can be used for the determination of analytical solutions.
The recent observational data on the cosmological scale—the main one being the observed acceleration of the Universe—require the development of new generalized models beyond the classical Friedman Robertson Walker (FRW) model of General Relativity. Today the FRW model is considered as the fundamental reference model on which all generalized models must reduce under specific assumptions.
In general, the field equations of a generalized cosmological model are nonlinear while new degrees of freedom and/or higher-order derivatives are introduced. The determination of analytical solutions as well as the study of integrability of those models is a subject of special interest.
The purpose of the present Special Issue entitled “Symmetry in Cosmology” is the presentation of new methods, techniques and results concerning the determination of new integrable systems in various significant generalized cosmological models.
Prof. Dr. Michael Tsamparlis
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.
- Dynamical systems
- Dark energy
- Modified theories of gravity