Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We propose an experiment to use the magneto-optical Faraday effect to probe the dynamic Hall conductivity of spin-l...

Using idealized models of the accretion disk we investigate the relativistic effects on the energy deposition rate via neutrino pair annihilation near the rotation axis of a Kerr black hole. Neutrinos are emitted from the accretion disk. The bending of neutrino trajectories and the redshift due to the disk rotation and gravitation are taken into consideration. The Kerr parameter, a, affects not...

We study the surface state-dependent magneto-optical properties of an ultrathin Floquet topological insulator (FTI) under influence external perpendicular magnetic field in terahertz frequency regime. Under picture, we treat circularly polarized off-resonant light as perturbation that introduces a mass gap at Dirac cone, thus, making state fermions massive. By tuning optical energy FTI thin-fil...

In this paper, we investigate the topological numbers for singly rotating Kerr black holes in arbitrary dimensions and four-dimensional Kerr-Newman hole. We show that uncharged holes, rotation parameter has a significant effect on number, dimension of spacetime remarkable number too. addition, find are same, which seems to indicate electric charge no holes. Our current research provides more ev...

The presence of optical polarization anisotropies, such as Faraday or Kerr effects, linear birefringence, and magnetoelectric birefringence are evidence for broken symmetry states of matter. The recent discovery of a Kerr effect using near-IR light in the pseudogap phase of the cuprates can be regarded as a strong evidence for a spontaneous symmetry breaking and the existence of an anomalous lo...