Dear Colleagues,

Despite the stunning success of the standard ΛCDM model in explaining various cosmological observations, many gaps remain which require new physics. One needs to examine the foundations of physics which has been developed over centuries from local observations extrapolated to the Universe at large. One such foundation is that constants relating various observables remain constant everywhere and all times. This is especially so because attempts to measure their variations have led to very tight constraints on their potential variation. One may ask if the tight constraints are due to extremely high constancy of the constants or due to the limitations of the tools used for their measurement.

Since Dirac in 1937 suggested the possibility of variability of Newton’s gravitational constant derived from his large numbers theory, there has been a great deal of interest not only in its variability but also in the potential of the variability of other fundamental constants, such as the speed of light, the fine structure constant, and proton to electron mass ratio. Since each fundamental constant is considered to represent a physical symmetry through Noether’s theorem, Symmetry has decided to produce a Special issue comprising a collection of diverse and innovative research papers on the Fundamental Constants in Cosmology.

Prof. Dr. Rodrigo Rocha Cuzinatto
Prof. Dr. Rajendra Gupta
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.

• Dirac cosmology
• constancy of physical constants
• measurement of physical constants
• gravitational constant
• dark energy
• vacuum energy
• dark matter
• symmetry breaking
• energy conservation in cosmology