Dirac quasinormal modes of a Schwarzschild black hole surrounded by free static spherically symmetric quintessence

Details Dirac quasinormal modes of a Schwarzschild black hole surrounded by free static spherically symmetric quintessence Dirac quasinormal modes of a Schwarzschild black hole surrounded by free static spherically symmetric quintessence

2007-10-26

arxiv.org/abs/0710.5064v1

Chin.Phys.Lett.26:030401,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages, 4 figures

Scientific paper

10.1088/0256-307X/26/3/030401

We evaluate the quasinormal modes of massless Dirac perturbation in a Schwarzschild black hole surrounded by the free static spherically symmetric quintessence by using the third-order WKB approximation. The result shows that due to the presence of quintessence, the massless field damps more slowly. The real part of the quasinormal modes increases and the the absolute value of the imaginary part increases when the state parameter $w_q$ increases. In other words, the massless Dirac field decays more rapidly for the larger $w_q$. And the peak value of potential barrier gets higher as $|k|$ increases and the location of peak moves along the right for fixed $w_q$.

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