4 citations · 4 across the 1 of their papers we have counts for
6 papers
Measuring the baryon content of the universe: BBN vs CMB
Subir Sarkar
The relic abundance of baryons - the only form of stable matter whose existence we are certain of - is a crucial parameter for many cosmological processes, as well as material evid…
Ultra-high energy cosmic rays and new physics
Subir Sarkar
Cosmic rays with energies beyond the Greisen-Zatsepin-Kuzmin `cutoff' at GeV pose a conundrum, the solution of which requires either drastic revision of our…
Big Bang Nucleosynthesis: Reprise
Subir Sarkar
Recent observational and theoretical developments concerning the primordial synthesis of the light elements are reviewed, and the implications for dark matter mentioned.
Sensitivity of Astrophysical Observations to Gravity-Induced Wave Dispersion in Vacuo
G. Amelino-Camelia, John Ellis, N. E. Mavromatos +2
We discuss possible signatures of quantum gravity for the propagation of light, including an energy-dependent velocity (refractive index), dispersion in velocity at a given energy,…
Primordial Nucleosynthesis and Dark Matter
Subir Sarkar
The cosmological abundance of nucleons determined from considerations of Big Bang nucleosynthesis allegedly provides compelling evidence for non-nucleonic dark matter. Recent devel…
Supersymmetric inflation and large-scale structure
Subir Sarkar
In effective supergravity theories following from the superstring, a modulus field can quite naturally set the neccessary initial conditions for successful cosmological inflation t…