报告题目 (Title)：Graviton-Photon Conversion in Atomic Electric Field and High Frequency Gravitational Wave Detections（原子电场中的引力-光子转化与高频引力波探测）

报告人 (Speaker)：梁桂荣（中国矿业大学）

报告时间 (Time)：2024年4月25日(周四) 15:00

报告地点 (Place)：校本部 G313

邀请人 (Inviter)：葛先辉 教授

主办部门：理学院物理系

摘要 (Abstract)：

Graviton-Photon conversion (GRAPH) is an important method to detect high-frequency gravitational waves (HFGW), the basic formalism and applications will be introduced in this talk. From graviton to photon conversion (G to P), we present key features of GRAPH in a static transverse background of electric or magnetic field; then we derive the cross section of graviton-atom interaction in a background of spherical electric field, the result makes it possible to catch MeV level gravitons from the universe with current or upgraded neutrino facilities; we will also discuss about corresponding astrophysical sources and the limitation on their properties. From photon to graviton conversion (P to G), we introduce an experiment using entangled photon pairs with one beam of them passing through a magnetic tunnel, to examine the energy quantization of gravitational field by counting missing photons. Finally we conclude and discuss some prospects of the topic.