Probing curved spacetime geometry in a giant quantum vortex flow
| Quand ? |
Le 02/04/2026, de 11:00 à 12:00 |
|---|---|
| Où ? | MGN1 107 |
| Participants |
Patrik Švančara |
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Gravity simulators are laboratory systems where small excitations like sound or surface waves behave as fields propagating on a curved spacetime geometry. In this talk, I will discuss the recently developed setup for stabilising a giant vortex in superfluid helium and outline how micron-scale waves on the superfluid-gas interface can be experimentally accessed by synthetic Schlieren imaging and off-axis digital holography. Theoretical framework, describing the observed wave dynamics as a massless field propagating in the vicinity of a rotating black hole, allows laboratory tests of various black-hole phenomena, including the excitation of bound states and black-hole ringdown signatures, setting superfluid helium at the forefront of finite-temperature field theory simulations.