Event horizons and ergoregions in 3He

G.E. Volovik; T.A. Jacobson

Event horizons and ergoregions in 3He

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arxiv cond-mat/9801308 v4 pith:GWP3NM6H submitted 1998-01-29 cond-mat gr-qchep-phhep-th

Event horizons and ergoregions in 3He

T.A. Jacobson , G.E. Volovik This is my paper

classification cond-mat gr-qchep-phhep-th

keywords eventhorizonsmovingergoregionshe-aquasiparticlessolitonsuperfluid

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Event horizons for fermion quasiparticles naturally arise in moving textures in superconductors and Fermi superfluids. We discuss the example of a planar soliton moving in superfluid 3He-A, which is closely analogous to a charged rotating black hole. The moving soliton will radiate quasiparticles via the Hawking effect at a temperature of about 5 \mu K, and via vacuum polarization induced by the effective `electromagnetic field' and `ergoregion'. Superfluid 3He-A thus appears to be a useful system for experimental and theoretical simulations of quantum effects related to event horizons and ergoregions.

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Cited by 1 Pith paper

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Simulations indicate that negative-curvature graphene membranes can form stable analogue horizons whose local density of states exhibits thermal character at a few tens of Kelvin.