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Mohamad Reza Setare

Mohamad Reza Setare

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId: 7003669033
Faculty: Faculty of Science
Address:
Phone: 08716660075

Research

Title
Spacing of the entropy spectrum for KS Black hole in Hoˇrava-Lifshitz gravity
Type
JournalPaper
Keywords
black hole-quasinormal modes
Year
2011
Journal MODERN PHYSICS LETTERS A
DOI
Researchers Mohamad Reza Setare ، Davood Momeni

Abstract

In this paper we present the spectrum of entropy/area for Kehagias-Sfetsos (KS) black hole in Ho$\check{\textbf{r}}$ava-Lifshitz (HL)gravity via quasi-normal modes (QNM) approach. We show that in the massive case the mass parameter $\mu$ disappears in the entropy spectrum and only the quasinormal modes modified by a term which is proportional to the mass square term. Our calculations show that the charge like parameter $\frac{1}{2\omega}=Q^{2}$ appears in the surface gravity and our calculations can be applied to any spherically symmetric spacetime which has only one physically acceptable horizon. Our main difference between our calculations and what was done in \cite{1} is that the portion of charge and mass is included explicitly in the surface gravity and consequently in the QNM expression. Since the imaginary part of the QNM is related to the adiabatic invariance of the system and also to the entropy, surprisingly the mass parameter do not appear in the entropy spectrum. Our conclusion supported by some acclaims about that the scalar field parameters (charges) can not change the fundamental parameters in the 4-dimensional black holes.