Quasinormal modes and greybody factors of the novel four dimensional Gauss-Bonnet black holes in asymptotically de Sitter space time: scalar, electromagnetic and Dirac perturbations

被引：38

作者：

Devi, Saraswati ^{[1
]}

Roy, Rittick ^{[2
]}

Chakrabarti, Sayan ^{[1
]}

机构：

[1] Indian Inst Technol Guwahati, Dept Phys, Gauhati 781039, India

[2] Indian Inst Technol, Dept Phys, Mumbai 400076, Maharashtra, India

来源：

EUROPEAN PHYSICAL JOURNAL C | 2020年 / 80卷 / 08期

关键词：

TENSOR;

D O I：

10.1140/epjc/s10052-020-8311-1

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We find the low lying quasinormal mode frequencies of the recently proposed novel four dimensional Gauss-Bonnet de Sitter black holes for scalar, electromagnetic and Dirac field perturbations using the third order WKB approximation as well as Pade approximation, as an improvement over WKB. We figure out the effect of the Gauss-Bonnet coupling alpha and the cosmological constant Lambda on the real and imaginary parts of the QNM frequencies. We also study the greybody factors and eikonal limits in the above background for all three different types of perturbations.

引用

页数：14

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