SEMINAR:- Black Holes beyond General Relativity and Their Gravitational-Wave Signatures
Gravitational waves(GW) from black hole binaries bring us a unique window into extreme gravity phenomena that will allow us to perform high-precision tests of General Relativity(GR). However, in this talk the speaker will address a more ambitious question: could we observe signs of modified gravity using gravitational waves? He will focus on the case of higher-derivative corrections to Einstein’s theory, which are well-motivated from the viewpoints of effective and fundamental theory. The speaker will first introduce a general family of higher-derivative theories and he will show how the Kerr metric is modified by these corrections. Regarding GW observations, the quantities most sensitive to higher-derivative corrections are the black hole’s quasinormal modes, which rule the gravitational waves emitted by a perturbed black hole. Obtaining these quasinormal modes is a very challenging problem in the case of rotating black holes beyond GR, but the speaker will report recent progress in this direction and discuss future prospects.
時間：2021.11.25(四) 16:30~18:30
地點：香港中文大學 科學館北座G25室
頻道：Zoom ID: 953-1074-9226
講者：Dr. Pablo Antonio CANO(Department of Physics and Astronomy KU Leuven, Belgium)
語言：英語
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【此屬轉載訊息，以主事單位發佈為準】
此活動由香港中文大學物理系主辦。
http://www.phy.cuhk.edu.hk/new/news&evt/col&sem/21-11-25sem.pdf
