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4 papers · 2 filters
Matter without matter: novel Kaluza-Klein spacetime in Einstein-Gauss-Bonnet gravity
Hideki Maeda, Naresh Dadhich
We consider Einstein-Gauss-Bonnet gravity in -dimensional Kaluza-Klein spacetime ${\ma M}^{4} \times {\ma K}^{n-4}$, where ${\ma K}^{n-4}$ is the Einstein space with nega…
Covariant BRST Quantization of Closed Strings in the PP-Wave Background
Yoichi Chizaki, Shigeaki Yahikozawa
We canonically quantize closed string theory in the pp-wave background with a non-zero flux of the three-form field strength by using the covariant BRST operator formalism. In this…
Kaluza-Klein black hole with negatively curved extra dimensions in string generated gravity models
Hideki Maeda, Naresh Dadhich
We obtain a new exact black-hole solution in Einstein-Gauss-Bonnet gravity with a cosmological constant which bears a specific relation to the Gauss-Bonnet coupling constant. The s…
Thermodynamics of de Sitter Black Holes: Thermal Cosmological Constant
Yuichi Sekiwa
We study the thermodynamic properties associated with the black hole event horizon and the cosmological horizon for black hole solutions in asymptotically de Sitter spacetimes. We…