24 citations · 24 across the 1 of their papers we have counts for
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Inflation with a Negative Cosmological Constant
Tirthabir Biswas, Anupam Mazumdar
We find a unique way of realizing inflation through cyclic phases in an universe with negative vacuum energy. According to the second law of thermodynamics entropy monotonically in…
Cyclic Inflation
Tirthabir Biswas, Stephon Alexander
We present an inflationary model that is geodesically complete and does not suffer from the transplanckian problem. In most inflationary models, massless (conformal) scalar field f…
The cosmological BCS mechanism and the Big Bang Singularity
Stephon Alexander, Tirthabir Biswas
We provide a novel mechanism that resolves the Big Bang Singularity present in FRW space-times without the need for ghost fields. Building on the fact that a four-fermion interacti…
Emergence of a Cyclic Universe from the Hagedorn Soup
Tirthabir Biswas
One of the challenges of constructing a successful cyclic universe scenario is to be able to incorporate the second law of thermodynamics which typically leads to Tolman's problem…
On the Transfer of Adiabatic Fluctuations through a Nonsingular Cosmological Bounce
Stephon Alexander, Tirthabir Biswas, Robert H. Brandenberger
We study the transfer of cosmological perturbations through a nonsingular cosmological bounce in a special model in which the parameters of the bounce and the equation of state of…
Non-perturbative Gravity, Hagedorn Bounce & CMB
Tirthabir Biswas, Robert Brandenberger, Anupam Mazumdar +1
In hep-th/0508194 it was shown how non-perturbative corrections to gravity can resolve the big bang singularity, leading to a bouncing universe. Depending on the scale of the non-p…