Zobrazeno 51 - 60
of 20 007
pro vyhledávání: '"Park D"'
Autor:
Jung, Eylee, Park, D. K.
Publikováno v:
Nucl.Phys.B766:269-283,2007
The emission spectra for the spin-1 photon fields are computed when the spacetime is a $(4+n)$-dimensional Schwarzschild phase. For the case of the bulk emission we compute the spectra for the vector mode and scalar mode separately. Although the emis
Externí odkaz:
http://arxiv.org/abs/hep-th/0610089
Autor:
Park, D. K.
Publikováno v:
Phys.Lett.B638:246-252,2006
The Hawking emissivities for the scalar-, vector-, and tensor-mode bulk gravitons are computed in the full range of the graviton's energy by adopting the analytic continuation numerically when the spacetime background is $(4+n)$-dimensional non-rotat
Externí odkaz:
http://arxiv.org/abs/hep-th/0603224
Autor:
Park, D. K.
Publikováno v:
Class.Quant.Grav.23:6773-6780,2006
The polar perturbation is examined when the spacetime is expressed by a 4d metric induced from higher-dimensional Schwarzschild geometry. Since the spacetime background is not a vacuum solution of 4d Einstein equation, the various general principles
Externí odkaz:
http://arxiv.org/abs/hep-th/0603028
Autor:
Park, D. K.
Publikováno v:
Class.Quant.Grav. 23 (2006) 4101-4110
Following the Regge-Wheeler algorithm, we derive a radial equation for the brane-localized graviton absorbed/emitted by the $(4+n)$-dimensional Schwarzschild black hole. Making use of this equation the absorption and emission spectra of the brane-loc
Externí odkaz:
http://arxiv.org/abs/hep-th/0512021
Autor:
Park, D. K.
Publikováno v:
Phys.Lett.B633:613-617,2006
The asymptotic quasinormal frequencies of the brane-localized $(4+n)$-dimensional black hole are computed. Since the induced metric on the brane is not an exact vacuum solution of the Einstein equation defined on the brane, the real parts of the quas
Externí odkaz:
http://arxiv.org/abs/hep-th/0511159
Autor:
Jung, Eylee, Park, D. K.
Publikováno v:
Nucl.Phys. B731 (2005) 171-187
The absorption and emission spectra for the minimally-coupled brane and bulk scalar fields are numerically computed when the spacetime is a $5d$ rotating black hole carrying the two different angular momentum parameters $a$ and $b$. The effect of the
Externí odkaz:
http://arxiv.org/abs/hep-th/0506204
Publikováno v:
Phys.Lett. B619 (2005) 347-351
The condition for the existence of the superradiance modes is derived for the incident scalar, electromagnetic and gravitational waves when the spacetime background is a higher-dimensional rotating black hole with multiple angular momentum parameters
Externí odkaz:
http://arxiv.org/abs/hep-th/0504139
Publikováno v:
Phys.Lett.B615:273-276,2005
It is shown that the superradiance modes always exist in the radiation by the $(4+n)$-dimensional rotating black holes. Using a Bekenstein argument the condition for the superradiance modes is shown to be $0 < \omega < m \Omega$ for the scalar, elect
Externí odkaz:
http://arxiv.org/abs/hep-th/0503163
Publikováno v:
Phys.Lett. B614 (2005) 78-84
The ratio of the low-energy absorption cross section for Dirac fermion to that for minimally coupled scalar is computed when the spacetimes are various types of the higher-dimensional Reissner-Nordstr\"{o}m black holes. It is found that the low-energ
Externí odkaz:
http://arxiv.org/abs/hep-th/0503027
Autor:
Jung, Eylee, Park, D. K.
Publikováno v:
Nucl.Phys. B717 (2005) 272-303
The absorption and emission problems of the brane-localized and bulk scalars are examined when the spacetime is a $(4+n)$-dimensional Reissner-Nordstr\"{o}m black hole. Making use of an appropriate analytic continuation, we compute the absorption and
Externí odkaz:
http://arxiv.org/abs/hep-th/0502002