152 citations · 1.2k across the 71 of their papers we have counts for
6 papers · 1 filter
Accelerating BTZ spacetime
Wei Xu, Kun Meng, Liu Zhao
An exact solution of -dimensional Einstein gravity with cosmological constant is studied. The corresponding spacetime is interpreted as an accelerating BTZ spacetime. The pr…
Gauss-Bonnet as effective cosmological constant
Liu Zhao, Kun Meng
It is known that Gauss-Bonnet terms in higher dimensional gravity can produce an effective cosmological constant. We add extra examples to this picture by presenting explicitly two…
Accelerating vacua in Gauss-Bonnet gravity
Wei Xu, Kun Meng, Liu Zhao
Accelerating vacua with maximally symmetric, but not necessarily spherical, sections for Einstein and Gauss-Bonnet gravities in generic dimensions are obtained. The acceleration pa…
Einstein frame and Jordan frame revisited: are they mathematically equivalent?
Wei Xu, Liu Zhao
This paper has been withdrawn by the author due to a crucial sign error in equation (5).
Note on a class of anisotropic Einstein metrics
Liu Zhao
A class of anisotropic Einstein metrics is presented. These metrics are axial symmetric and contains an anisotropy parameter , which is identified as the amplitude of the proper…
No fast food for solving higher curvature gravity
Liu Zhao
This paper is withdrawn because it was already known in the literature that the single function metric ansatz invalidates the effective action method. (Refs: gr-qc/0306114, gr-qc/0…