물리학과 야니스 교수 연구실/액시온 및 극한상호작용 연구단 (CAPP/IBS) 입니다.
아래 세미나에 관심 있으신 연구자들의 참석을 요청드립니다.
CAPP seminars will be held. Anyone interested in this topic is warmly welcome.
Speaker: Dr. Chan PARK (Seoul National University)
Date: January 25, 2024 (Thursday)
Time: 4:00 PM (KST)
Venue: CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus
Meeting ID: 610 806 8959
Topic: Detecting Gravitational Waves by Elecromagnetic Cavity
Gravitational wave (GW) detection using electromagnetic (EM) cavities has garnered significant attention in recent years. With ongoing experiments on axion detection using highly sensitive electromagnetic cavity, there is potential to apply these existing facilities to GW detection, opening up a new channel of GW observation. In this talk, we comprehensively examine the principles of GW detection using EM cavities within the framework of general relativity. Our work demonstrates that the rigidity condition imposed on the material, as provided in the literature, is inappropriate due to its reliance on a gauge-dependent quantity that cannot be controlled experimentally. Instead, we incorporate elasticity into the material and revise the governing equations for the electric field induced by GWs, expressing them solely in terms of gauge-invariant quantities. Applying these equations to a cylindrical cavity with the TM010 mode, we present the GW antenna pattern for the detector.