235 citations · 486 across the 5 of their papers we have counts for
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cond-mat.other2003★ 72 cited
Observer dependence for the phonon content of the sound field living on the effective curved space-time background of a Bose-Einstein condensate
Petr O. Fedichev, Uwe R. Fischer
We demonstrate that the ambiguity of the particle content for quantum fields in a generally curved space-time can be experimentally investigated in an ultracold gas of atoms formin…
cond-mat2003★ 235 cited
Gibbons-Hawking Effect in the Sonic de Sitter Space-Time of an Expanding Bose-Einstein-Condensed Gas
Petr O. Fedichev, Uwe R. Fischer
We propose an experimental scheme to observe the Gibbons-Hawking effect in the acoustic analog of a 1+1-dimensional de Sitter universe, produced in an expanding, cigar-shaped Bose-…
cond-mat.other2003★ 160 cited
"Cosmological" quasiparticle production in harmonically trapped superfluid gases
Petr O. Fedichev, Uwe R. Fischer
We show that a variety of cosmologically motivated effective quasiparticle space-times can be produced in harmonically trapped superfluid Bose and Fermi gases. We study the analogu…