Zobrazeno 1 - 10
of 29
pro vyhledávání: '"Jan E. Åman"'
Publikováno v:
Entropy, Vol 17, Iss 9, Pp 6503-6518 (2015)
We give a brief survey of thermodynamic metrics, in particular the Hessian of the entropy function, and how they apply to black hole thermodynamics. We then provide a detailed discussion of the Gibbs surface of Kerr black holes. In particular, we ana
Externí odkaz:
https://doaj.org/article/7e3a8f9546944a91b0ebf082fcae1574
Autor:
Jan E. Åman, Narit Pidokrajt
Publikováno v:
EAS Publications Series. 30:269-273
The Hessian of the entropy function can be thought of as a metric tensor on state space. In the context of thermodynamical fluctuation theory Ruppeiner has argued that the Riemannian geometry of this metric gives insight into the underlying statistic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b9f1a3c3b6f97c5424736ec1be433072
https://doi.org/10.1051/eas:0830042
https://doi.org/10.1051/eas:0830042
Publikováno v:
Entropy
Volume 17
Issue 9
Pages 6503-6518
Entropy, Vol 17, Iss 9, Pp 6503-6518 (2015)
Volume 17
Issue 9
Pages 6503-6518
Entropy, Vol 17, Iss 9, Pp 6503-6518 (2015)
We give a brief survey of thermodynamic metrics, in particular the Hessian of the entropy function, and how they apply to black hole thermodynamics. We then provide a detailed discussion of the Gibbs surface of Kerr black holes. In particular we anal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14d5aa0250b99092cc7db1907b1f1e64
http://arxiv.org/abs/1507.06097
http://arxiv.org/abs/1507.06097
Publikováno v:
Classical and Quantum Gravity. 15:1089-1101
A class of Riemann-Cartan G\"odel-type space-times are examined in the light of the equivalence problem techniques. The conditions for local space-time homogeneity are derived, generalizing previous works on Riemannian G\"odel-type space-times. The e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ed69ecddb0087a3259d5eea792586a7
https://doi.org/10.1088/0264-9381/15/4/026
https://doi.org/10.1088/0264-9381/15/4/026
Autor:
Jan E. Åman, Narit Pidokrajt
Publikováno v:
The European Physical Journal C. 73
We study thermodynamic geometries of Myers–Perry (MP) black holes with arbitrary number of angular momenta. This geometric method allows us to visualize thermodynamic state spaces of the MP black holes as wedges embedded in a Minkowski-like paramet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2d129b18e0a568987318a74634f3b65
https://doi.org/10.1140/epjc/s10052-013-2601-9
https://doi.org/10.1140/epjc/s10052-013-2601-9
Autor:
Helgi Freyr Rúnarsson, Jan E. Åman
Publikováno v:
Springer Proceedings in Mathematics & Statistics ISBN: 9783642401565
The extreme limit of the Kerr solution has recently attracted much attention, see (Compere, arXiv:1203.3561 [hep-th]) and references therein. We have investigated hypersurfaces called velocity-of-light surfaces for extreme and near extreme Kerr.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d344c4b71ff80cb8a53172a25999879
https://doi.org/10.1007/978-3-642-40157-2_70
https://doi.org/10.1007/978-3-642-40157-2_70
Publikováno v:
Scopus-Elsevier
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a672a18a75cb66ce66855443e4e93a2
https://doi.org/10.1142/9789814374552_0149
https://doi.org/10.1142/9789814374552_0149
Autor:
Jan E. Åman, Narit Pidokrajt, John Ward, Kerstin E. Kunze, Marc Mars, Miguel Angel Vázquez-Mozo
We investigate thermodynamic geometries of two families of asymptotically Anti-de Sitter black holes, i.e. the Reissner-Nordstr\"om Anti-de Sitter in four dimensions and the BTZ black hole. It is found that the Anti-de Sitter space renders the geomet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e47e2de49548fa63393d9d9210a7166e
http://arxiv.org/abs/0901.2944
http://arxiv.org/abs/0901.2944
We discuss the boundary of the spacetime region through each point of which a trapped surface passes, first in some simple soluble examples, and then in the self-similar Vaidya solution. For the latter the boundary must lie strictly inside the event
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61a12b60e6f562c4bebad1592e5424b0
Publikováno v:
General Relativity and Gravitation. 23:1023-1055
For space-times in general relativity, the Petrov classification of the Weyl conformai curvature and the Plebanski or Segre classification of the Ricci tensor each depend on the properties of the roots of quartic equations. The coefficients in these
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dc415a6fb10485dea5a8400afb12a184
https://doi.org/10.1007/bf00756865
https://doi.org/10.1007/bf00756865