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cond-mat.quant-gas2012★ 272 cited
Negative Absolute Temperature for Motional Degrees of Freedom
Simon Braun, Jens Philipp Ronzheimer, Michael Schreiber +4
Absolute temperature, the fundamental temperature scale in thermodynamics, is usually bound to be positive. Under special conditions, however, negative temperatures - where high-en…
cond-mat.quant-gas2010★ 81 cited
Coherent Interaction of a Single Fermion with a Small Bosonic Field
Sebastian Will, Thorsten Best, Simon Braun +2
We have experimentally studied few-body impurity systems consisting of a single fermionic atom and a small bosonic field on the sites of an optical lattice. Quantum phase revival s…