The EFT of spinning gravitating objects at the frontier of gravitational wave physics

by Dr Zhewei Yin (Uppsala University)

Friday 17 Feb 2023, 10:00 → 11:00 Asia/Shanghai

B105 (CEHP)

The accumulation of experimental data for direct detections of gravitational waves (GWs) calls for increasingly precise theoretical predictions. The binary inspiral of compact objects including black holes and neutron stars, which generates the major part of the GW signals, needs to be studied analytically in the post-Newtonian (PN) regime, i.e. in the weak field, non-relativistic limit. The effective field theories (EFTs), originally developed for particle physics, turn out to be powerful in studying the classical physics of the GW phenomena as well. In particular, the EFT of spinning gravitating objects has been consistently producing state-of-the-art theoretical predictions for spin effects in GW physics. I will present the most recent progress in this direction, including both formal theoretical development, as well as the completion of the fifth-PN description of binary inspiral for the first time.

Biography:
Dr Zhewei Yin obtained his BSc degree in 2015 at Peking University, China, and his PhD degree in 2020 at Northwestern University, USA. He has since then been a postdoctoral researcher at Uppsala University, Sweden. He works in the field of theoretical high energy physics, with a focus on discovering new properties and developing modern methods in scattering amplitudes and effective field theories (EFTs). He has been working on understanding the phenomenon of spontaneously broken symmetry in modern contexts such as soft theorems of EFTs and extensions of the color-kinematics duality, as well as applications of these formal development to particle phenomenology and gravitational wave physics.

Tecent Meeting: 846-217-139

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