918 citations · 1.5k across the 9 of their papers we have counts for
9 papers
Dynamical behaviors of FRW Universe containing a positive/negative potential scalar field in loop quantum cosmology
Xiao Liu, Kui Xiao, Jian-Yang Zhu
The dynamical behaviors of FRW Universe containing a posivive/negative potential scalar field in loop quantum cosmology scenario are discussed. The method of the phase-plane analys…
Path Integral of Bianchi I models in Loop Quantum Cosmology
Xiao Liu, Fei Huang, Jian-Yang Zhu
A path integral formulation of the Bianchi I models containing a massless scalar field in loop quantum cosmology is constructed. Following the strategy used in the homogenous and i…
Gravity Duals of Lifshitz-like Fixed Points
Shamit Kachru, Xiao Liu, Michael Mulligan
We find candidate macroscopic gravity duals for scale-invariant but non-Lorentz invariant fixed points, which do not have particle number as a conserved quantity. We compute two-po…
Things Fall Apart: Topology Change from Winding Tachyons
A. Adams, X. Liu, J. McGreevy +2
We argue that closed string tachyons drive two spacetime topology changing transitions -- loss of genus in a Riemann surface and separation of a Riemann surface into two components…
Dynamical Dimension Change in Supercritical String Theory
Simeon Hellerman, Xiao Liu
We study tree-level solutions to heterotic string theory in which the number of spacetime dimensions 10+n changes dynamically due to closed string tachyon condensation. Taking the…
Beauty is Attractive: Moduli Trapping at Enhanced Symmetry Points
Lev Kofman, Andrei Linde, Xiao Liu +3
We study quantum effects on moduli dynamics arising from the production of particles which are light at special points in moduli space. The resulting forces trap the moduli at thes…