skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Greybody factors for brane scalar fields in a rotating black hole background

Abstract

We study the evaporation of (4+n)-dimensional rotating black holes into scalar degrees of freedom on the brane. We calculate the corresponding absorption probabilities and cross sections obtaining analytic solutions in the low-energy regime and compare the derived analytic expressions to numerical results, with very good agreement. We then consider the high-energy regime, construct an analytic high-energy solution to the scalar-field equation by employing a new method, and calculate the absorption probability and cross section for this energy regime, finding again a very good agreement with the exact numerical results. We also determine the high-energy asymptotic value of the total cross section and compare it to the analytic results derived from the application of the geometrical optics limit.

Authors:
 [1]; ;  [2];  [1];  [3]
  1. Department of Mathematical Sciences, University of Durham, Science Site, South Road, Durham DH1 3LE (United Kingdom)
  2. Division of Theoretical Physics, Department of Physics, University of Ioannina, Ioannina GR-45110 (Greece)
  3. (Greece)
Publication Date:
OSTI Identifier:
21020412
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 8; Other Information: DOI: 10.1103/PhysRevD.75.084043; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ABSORPTION; ANALYTICAL SOLUTION; BLACK HOLES; BRANES; COMPARATIVE EVALUATIONS; COSMOLOGY; DEGREES OF FREEDOM; PROBABILITY; QUANTUM FIELD THEORY; SCALAR FIELDS; TOTAL CROSS SECTIONS

Citation Formats

Creek, S., Efthimiou, O., Tamvakis, K., Kanti, P., and Division of Theoretical Physics, Department of Physics, University of Ioannina, Ioannina GR-45110. Greybody factors for brane scalar fields in a rotating black hole background. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.084043.
Creek, S., Efthimiou, O., Tamvakis, K., Kanti, P., & Division of Theoretical Physics, Department of Physics, University of Ioannina, Ioannina GR-45110. Greybody factors for brane scalar fields in a rotating black hole background. United States. doi:10.1103/PHYSREVD.75.084043.
Creek, S., Efthimiou, O., Tamvakis, K., Kanti, P., and Division of Theoretical Physics, Department of Physics, University of Ioannina, Ioannina GR-45110. Sun . "Greybody factors for brane scalar fields in a rotating black hole background". United States. doi:10.1103/PHYSREVD.75.084043.
@article{osti_21020412,
title = {Greybody factors for brane scalar fields in a rotating black hole background},
author = {Creek, S. and Efthimiou, O. and Tamvakis, K. and Kanti, P. and Division of Theoretical Physics, Department of Physics, University of Ioannina, Ioannina GR-45110},
abstractNote = {We study the evaporation of (4+n)-dimensional rotating black holes into scalar degrees of freedom on the brane. We calculate the corresponding absorption probabilities and cross sections obtaining analytic solutions in the low-energy regime and compare the derived analytic expressions to numerical results, with very good agreement. We then consider the high-energy regime, construct an analytic high-energy solution to the scalar-field equation by employing a new method, and calculate the absorption probability and cross section for this energy regime, finding again a very good agreement with the exact numerical results. We also determine the high-energy asymptotic value of the total cross section and compare it to the analytic results derived from the application of the geometrical optics limit.},
doi = {10.1103/PHYSREVD.75.084043},
journal = {Physical Review. D, Particles Fields},
number = 8,
volume = 75,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}