2014/09/30 by J. Klinder, Jens Klinder, Hans Keßler +7 · 6 citations
Physics and Astronomy · #Biology #Cold Atom Physics and Bose-Einstein Condensates #Genetics #Phase (matter) #Phase transition #Physics #Quantum chaos and dynamical systems #Quantum many-body systems #Quantum mechanics #Statistical physics #Transition (genetics) #cond-mat.quant-gas
paper · pdf · doi:10.1073/pnas.1417132112
published as PNAS 2015 112 (11) 3290-3295 · 10 pages, 4 figures. Main text & Supplement; PNAS 2015. arXiv admin note: text overlap with arXiv:1407.4954
openalex publication_date 2015/03/02 · arxiv created 2015/03/16 · arxiv updated 2015/03/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The Dicke model with a weak dissipation channel is realized by coupling a Bose-Einstein condensate to an optical cavity with ultranarrow bandwidth. We explore the dynamical critical properties of the Hepp-Lieb-Dicke phase transition by performing quenches across the phase boundary. We observe hysteresis in the transition between a homogeneous phase and a self-organized collective phase with an enclosed loop area showing power-law scaling with respect to the quench time, which suggests an interpretation within a general framework introduced by Kibble and Zurek. The observed hysteretic dynamics is well reproduced by numerically solving the mean-field equation derived from a generalized Dicke Hamiltonian. Our work promotes the understanding of nonequilibrium physics in open many-body systems with infinite range interactions.