53 citations · 102 across the 7 of their papers we have counts for
5 papers · 1 filter
Mass of Dyonic Black Holes and Entropy Super-Additivity
Wei-Jian Geng, Blake Giant, H. Lu +1
We study extremal static dyonic black holes in four-dimensional Einstein-Maxwell-Dilaton theory, for general values of the constant in the exponential coupling of the…
Time Machines and AdS Solitons with Negative Mass
Xing-Hui Feng, Wei-Jian Geng, H. Lu
We show that in D=2n+1 dimensions, when mass is negative and all angular momenta are non-vanishing, Kerr and Kerr-AdS metrics describe smooth time machines, with no curvature singu…
Einstein-Vector Gravity, Emerging Gauge Symmetry and de Sitter Bounce
Wei-Jian Geng, H. Lu
We construct a class of Einstein-vector theories where the vector field couples bilinearly to the curvature polynomials of arbitrary order in such a way that only Riemann tensor ra…
Non-Abelian (Hyperscaling Violating) Lifshitz Black Holes in General Dimensions
Xing-Hui Feng, Wei-Jian Geng
We consider Einstein gravities coupled to a cosmological constant and multiple Yang-Mills fields in general dimensions and find that the theories admit colored Lifshitz sol…
Isotropic Expansion of Inhomogeneous Universe
Wei-Jian Geng, H. Lu
We propose a cosmological model that describes isotropic expansion of inhomogeneous universe. The energy-momentum tensor that creates the spatial inhomogeneity may not affect the u…