Special Issue "The Dark Side of the Universe: Dark Energy, Dark Matter and Modified Gravity"
A special issue of Galaxies (ISSN 2075-4434).
Deadline for manuscript submissions: closed (30 November 2018)
Dr. Tiberiu Harko
1. Department of Physics, Babes-Bolyai University, Kogalniceanu Street, Cluj-Napoca 400084, Romania 2. Department of Mathematics, University College London, Gower Street, London, WC1E 6BT, UK3. School of Physics, Sun Yat-Sen University, Guangzhou 510275, China
Phone: 0040720 944 087
Interests: general relativity; modified theories of gravity; dark matter; cosmology; astrophysics and applied mathematics
Modern astrophysical and cosmological models are plagued with two severe theoretical problems, namely, the dark energy and the dark matter enigmas. Relative to the latter, the dynamics of test particles around galaxies, as well as the corresponding mass discrepancy in galactic clusters, is explained by postulating the existence of a hypothetical form of matter, called dark matter. Relative to the dark energy problem, high precision observational data has confirmed with startling evidence that the Universe is undergoing a phase of accelerated expansion. This phase is one of the most important and challenging current problems in cosmology, and represents a new imbalance in the governing gravitational equations. Several candidates, responsible for this expansion, have been proposed in the literature, in particular, dark energy models and modified theories of gravity, amongst others. Outstanding questions are related to the nature of this so-called “dark energy” that is driving the acceleration of the universe, and whether it is due to the vacuum energy or a dynamical field. On the other hand, the late-time cosmic acceleration, as well as the elusive dark matter, may be due to modifications of General Relativity, which introduce new degrees of freedom to the gravitational sector itself.
This Special Issue will explore a plethora of viable dark matter, dark energy and modified gravity models, some of which consistently reproduce the inflationary epoch, and will be tested against large-scale structure and lensing, astrophysical and laboratory measurements, as well as laboratory and space-based Equivalence Principle experiments. These Solar System tests, large scale structure measurements and lensing data, amongst others, restrict the range of allowed modified gravity models and offer a window into understanding the perplexing nature of the cosmic acceleration and of gravity itself.
Dr. Tiberiu Harko
Dr. Francisco S. N. Lobo
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. Galaxies is an international peer-reviewed open access quarterly 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 350 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.
- modified gravity
- dark energy
- dark matter, cosmology