116 citations · 765 across the 35 of their papers we have counts for
10 papers · 1 filter
Dilaton assisted two-field inflation from no-scale supergravity
Girish Kumar Chakravarty, Suratna Das, Gaetano Lambiase +1
We present a two-field inflation model where inflaton field has a non-canonical kinetic term due to the presence of a dilaton field. It is a two-parameter generalization of one-par…
Constraints on just enough inflation preceded by a thermal era
Suratna Das, Gaurav Goswami, Jayanti Prasad +1
If the inflationary era is preceded by a radiation dominated era in which the inflaton too was in thermal equilibrium at some very early time then the CMB data places an upper boun…
Higgs vacuum stability and inflationary dynamics after BICEP2 and PLANCK dust polarisation data
Kaushik Bhattacharya, Joydeep Chakrabortty, Suratna Das +1
If the recent detection of mode polarization of the Cosmic Microwave Background by BICEP2 observations, withstand the test of time after the release of recent PLANCK dust polar…
Effect of Lee-Wick thermodynamics in the cosmology of the early universe
Kaushik Bhattacharya, Suratna Das
The Lee-Wick theories require unusual Lee-Wick (LW) partners to the standard model (SM) particles. The excitations of the unusual fields may have indefinite norms in the Hilbert sp…
A toy model based analysis on the effect of the Lee-Wick partners in the evolution of the early universe
Kaushik Bhattacharya, Suratna Das
In the present article the thermodynamic results of the Lee-Wick partner infested universe have been applied in a toy model where there is one Lee-Wick partner to each of the stand…
Thermodynamics of the Lee-Wick partners: An alternative approach
Kaushik Bhattacharya, Suratna Das
It was pointed out some time ago that there can be two variations in which the divergences of a quantum field theory can be tamed using the ideas presented by Lee and Wick. In one…