Spin Hall effects and gravitational lensing

Spin Hall effects represent a diverse class of physical phenomena related to the propagation of wave packets carrying intrinsic angular momentum. These effects have been experimentally observed in optics and condensed matter physics, but they are also expected to occur for wave packets propagating in gravitational fields. In this talk, I will introduce the equations of motion describing the gravitational spin Hall effect and I will discuss some of their properties. Based on this, I will present recent results (arXiv:2209.06459) regarding the strong lensing of gravitational waves. These results suggest that there are plausible astrophysical scenarios in which the gravitational spin Hall effect has a significant effect for gravitational waves and could lead to experimental observation.

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Venue: Room D

Zoom (Passcode: 134595, Meeting ID: 823 8038 0442)