20 June 2024

Analogue gravitational field of nonlinear fluid dynamics and the cosmic shock-wave censor

[TheChamp-Sharing]
Intervenant : Uwe Fischer

After a brief review of the motivation and scope of analogue gravity, and of the cosmiccensorship hypothesis, I introduce an analogue of spacetime singularity in Bose-Einstein condensates, in the form of a shock wave stemming from the nonlinearity of the condensate fluid.It will then be shown that the nakedness of the shock singularity is dressed by the analoguetrans-Planckian physics of the ultracold gas, thereby providing a cosmic censor to forbid effective spacetime nakedness in the BEC.

20 June 2024, 11h0012h00
Site du SP2MI-H1 en salle de comm' - Chasseneuil du Poitou

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