Spectroscopy of Black Holes

ABSTRACT: In this thesis, the Maggiore's method (MM), which evaluates the transition frequency that appears in the adiabatic invariant from the highly damped quasinormal mode (QNM) frequencies, is used to investigate the entropy/area spectra of the Garfinkle-Horowitz-Strominger black hole (GHSBH) and z = 0 Lifshitz black hole (ZZLBH). The complex QNM frequencies of the GHSBH and ZZLBH are computed using the confluent hypergeometric (CH) differential equation that arises when the scalar perturbations around the event horizon are considered. Although the entropy/area is characterized by the parameters of black holes (BHs), their quantization is shown to be independent of those parameters. However, both spectra are equally spaced. We also represent the mass calculations of the associated BHs. In this regard, we compute the mass of the GHSBH by using Komar’s mass integral formulation. For the mass of the ZZLBH, we use both Wald’s entropy formula and Brown-York (BY)'s quasilocal mass formalism. Keywords: Garfinkle-Horowitz-Strominger Black Hole, z = 0 Lifshitz Black Hole, Maggiore's Method, Black Hole Spectroscopy, Quasilocal Mass. …………………………………………………………………………………………………………………………