4 papers
Cosmological Variation of Proton-to-Electron Mass Ratio in a Chameleon-Brans-Dicke Theory
Malavika K, Soumya Chakrabarti
We investigate the cosmological variation of the proton-to-electron mass ratio, , within a generalized Brans-Dicke framework with two scalar fields : a geometric scalar…
Acceleration from a Phase of Entropic Balance
Soumya Chakrabarti
We discuss the notion of generating a cosmic inflation without any big bang singularity. It has been proved recently by Good and Linder (arXiv : 2503.02380v1) that such an expansio…
A Cosmological Reconstruction of the Higgs Vacuum Expectation Value
Soumya Chakrabarti, Anagha V, Selva Ganesh +1
We present a simple toy model of cosmic acceleration driven purely by a self-interacting scalar field embedded in theory of grand unification. The scalar self-interaction is Higgs-…
Cosmic Acceleration and the notion of Alternative Vacuum in Nash Theory
Soumya Chakrabarti, Soumya Bhattacharya, Rabin Banerjee +1
We argue that Nash theory, a quadratic theory of Gravity, can describe a late-time cosmic acceleration without any exotic matter or cosmological constant. The observational viabili…