3 papers
physics.optics2026
Optical vortex generation by magnons with spin-orbit-coupled light
Ryusuke Hisatomi, Alto Osada, Kotaro Taga +5
Light possesses both spin and orbital angular momentum. In spatially asymmetric optical fields, these properties undergo spontaneous coupling, referred to as optical spin-orbit cou…
gr-qc2026
Post-adiabatic waveforms from extreme mass ratio inspirals in the presence of dark matter
Mostafizur Rahman, Takuya Takahashi
Extreme mass-ratio inspirals (EMRIs), in which a solar mass compact object is whirling around a supermassive black hole, act as precise tracers of the spacetime geometry and astrop…
gr-qc2025
Resonance of black hole quasinormal modes in coupled systems
Takuya Takahashi, Hayato Motohashi, Kazufumi Takahashi
Black hole quasinormal modes (QNMs) can exhibit resonant excitations associated with avoided crossings in their complex frequency spectrum. Such resonance phenomena can serve as no…