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Search: authors:"Cheng-Yong Zhang"

4 papers found.
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Einstein-Gauss-Bonnet black strings at large D

We study the black string solutions in the Einstein-Gauss-Bonnet(EGB) theory at large D. By using the 1/D expansion in the near horizon region we derive the effective equations that describe the dynamics of the EGB black strings. The uniform and non-uniform black strings are obtained as the static solutions of the effective equations. From the perturbation analysis of the...

Thermodynamical and dynamical properties of charged BTZ black holes

We investigate the spacetime properties of BTZ black holes in the presence of the Maxwell field and Born–Infeld field and find rich properties in the spacetime structures when the model parameters are varied. Employing Landau–Lifshitz theory, we examine the thermodynamical phase transition in the charged BTZ black holes. We further study the dynamical perturbation in the...

Superradiant instability of Kerr-de Sitter black holes in scalar-tensor theory

Cheng-Yong Zhang 0 Shao-Jun Zhang 0 Bin Wang 0 0 Department of Physics and Astronomy, Shanghai Jiao Tong University , Shanghai 200240, China We investigate in detail the mechanism of superradiance