305 citations · 4k across the 67 of their papers we have counts for
11 papers · 1 filter
IR Divergences in Inflation and Entropy Perturbations
Wei Xue, Xian Gao, Robert Brandenberger
We study leading order perturbative corrections to the two point correlation function of the scalar field describing the curvature perturbation in a slow-roll inflationary backgrou…
Cosmological UV/IR Divergences and de-Sitter Spacetime
Wei Xue, Keshav Dasgupta, Robert Brandenberger
We consider one loop graviton corrections to scalar field Green's functions in the de Sitter phase of an inflationary space-time, a topic relevant to the computation of cosmologica…
Supersymmetry Breaking and Dilaton Stabilization in String Gas Cosmology
Sasmita Mishra, Wei Xue, Robert Brandenberger +1
In this Note we study supersymmetry breaking via gaugino condensation in string gas cosmology. We show that the same gaugino condensate which is introduced to stabilize the dilaton…
Non-relativistic Supersymmetry
Wei Xue
We construct an N=1 supersymmetric gauge theory from z=3 Lifshitz field theory. By modifying the supersymmetry (susy) algebra based on the spacetime symmetry SO(3) scaling…
Fluctuations in a Hořava-Lifshitz Bouncing Cosmology
Xian Gao, Yi Wang, Wei Xue +1
Hořava-Lifshitz gravity is a potentially UV complete theory with important implications for the very early universe. In particular, in the presence of spatial curvature it is possi…
Thermal Fluctuations and Bouncing Cosmologies
Yi-Fu Cai, Wei Xue, Robert Brandenberger +1
We study the conditions under which thermal fluctuations generated in the contracting phase of a non-singular bouncing cosmology can lead to a scale-invariant spectrum of cosmologi…