465 citations · 5k across the 107 of their papers we have counts for
3 papers · 1 filter
Semi analytic approach to understanding the distribution of neutral hydrogen in the universe: Comparison of simulations with observations
T. Roy Choudhury, R. Srianand, T. Padmanabhan
Following Bi & Davidsen (1997), we perform one dimensional semi analytic simulations along the lines of sight to model the intergalactic medium (IGM). Since this procedure is compu…
The Issue of Choosing Nothing: What Determines the Low Energy Vacuum State of Nature?
T. Padmanabhan, T. Roy Choudhury
Starting from an (unknown) quantum gravitational model, one can invoke a sequence of approximations to progressively arrive at quantum field theory (QFT) in curved spacetime, QFT i…
Semi analytic approach to understanding the distribution of neutral hydrogen in the universe
T. Roy Choudhury, T. Padmanabhan, R. Srianand
Analytic derivations of the correlation function and the column density distribution for neutral hydrogen in the IGM are presented, assuming that the non-linear baryonic mass densi…