Abstract
This paper deals with the semiclassical radiation spectrum of static and circularly symmetric 3D charged dilaton black holes with cosmological constant Λ in non-asymptotically flat spacetimes. We first review the 3D charged dilaton black holes which are solution to low-energy string action. The wave equation of a massless scalar field is shown to be exactly solvable in terms of hypergeometric functions. Thus, the radiation spectrum and its corresponding temperature are obtained, precisely. Computations at high frequency regime show that the radiation spectrum yields the Hawking temperature of the black hole with no charge. Unlike the chargeless case, the Hawking temperature of the charged dilaton black holes is derived from the radiation spectrum at the low frequencies. The utmost importance of the Λ in the latter result is highlighted.
Similar content being viewed by others
References
Abramowitz, M., Stegun, I.A.: Handbook of Mathematical Functions. Dover, New York (1965)
Angheben, M., Nadalini, M., Vanzo, L., Zerbini, S.: J. High Energy Phys. 05, 014 (2005)
Banerjee, R., Majhi, B.R.: J. High Energy Phys. 06, 095 (2008)
Bekenstein, J.D.: Phys. Rev. D 7, 2333 (1973)
Brown, J.D., York, J.W.: Phys. Rev. D 47, 1407 (1993)
Chan, K.C.K., Mann, R.B.: Phys. Rev. D 50, 6385 (1994)
Clément, G., Fabris, J.C., Marques, G.T.: Phys. Lett. B 651, 54 (2007)
Damour, T., Ruffini, R.: Phys. Rev. D 14, 332 (1976)
Fernando, S.: Gen. Relativ. Gravit. 37, 461 (2005)
Fernando, S.: Phys. Rev. D 77, 124005 (2008)
Gibbons, G.W., Hawking, S.W.: Phys. Rev. D 15, 2752 (1977)
Hawking, S.W.: Nature 248, 30 (1974)
Hawking, S.W.: Commun. Math. Phys. 43, 199 (1975)
Hawking, S.W.: Commun. Math. Phys. 46, 206 (1976)
Liu, C.C.M., Yau, S.T.: Phys. Rev. Lett. 90, 231102 (2003)
Mazharimousavi, S.H., Sakalli, I., Halilsoy, M.: Phys. Lett. B 672, 177 (2009)
Ortega, A.L.: Gen. Relativ. Gravit. 37, 167 (2005)
Parikh, M.K., Wilczek, F.: Phys. Rev. Lett. 85, 5042 (2000)
Robinson, S.P., Wilczek, F.: Phys. Rev. Lett. 95, 011303 (2005)
Srinivasan, K., Padmanabhan, T.: Phys. Rev. D 60, 24007 (1999)
Strominger, A., Vafa, C.: Phys. Lett. B 379, 99 (1996)
Wald, R.M.: General Relativity. University of Chicago Press, Chicago (1984)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sakalli, I. Effect of the cosmological constant in the Hawking radiation of 3D charged dilaton black hole. Astrophys Space Sci 340, 317–322 (2012). https://doi.org/10.1007/s10509-012-1053-2
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10509-012-1053-2