4 papers
Over-Luminous Type Ia Supernovae and Standard Candle Cosmology
Abhinandan Ravi, T. R. Govindarajan, Surajit Kalita
Type Ia supernovae (SNe\,Ia) serve as crucial cosmological distance indicators because of their empirical consistency in peak luminosity and characteristic light curve decline rate…
Generalized Landau Yang Theorem
T. R. Govindarajan, Rakesh Tibrewala
Landau Yang theorem is well known for the past several decades. It prohibits the decay of a massive spin 1 particle to two photons. This emerges simply from the representation theo…
Stueckelberg field and Cosmology
T R Govindarajan
Stueckelberg introduced an axion like scalar field to provide mass to the gauge electromagnetic field without breaking gauge invariance. This can be considered as a precursor to th…
Ultralight Dark Matter -- A Novel proposal
T R Govindarajan
A novel proposal is made to account for the dark matter component of the Universe. Ultralight dark matter with mass is one of the strong candidates fo…