2012/11/30 by A. Sindona, John Goold, J. Goold +5
Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #Boson #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Electron #Fermi Gamma-ray Space Telescope #Fermi gas #Fermion #Leading edge #Orthogonality #Physics #Quantum #Quantum decoherence #Quantum electrodynamics #Quantum many-body systems #Quantum mechanics #Singularity #Ultracold atom #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1103/physrevlett.111.165303
published as Phys. Rev. Lett. 111, 165303 (2013) · substantially rewritten - errors and typos corrected
arxiv created 2013/09/12 · openalex publication_date 2013/10/16 · arxiv updated 2015/06/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The Fermi-edge singularity and the Anderson orthogonality catastrophe describe the universal physics which occurs when a Fermi sea is locally quenched by the sudden switching of a scattering potential, leading to a brutal disturbance of its ground state. We demonstrate that the effect can be seen in the controllable domain of ultracold trapped gases by providing an analytic description of the out-of-equilibrium response to an atomic impurity, both at zero and at finite temperature. Furthermore, we link the transient behavior of the gas to the decoherence of the impurity, and to the degree of the non-Markovian nature of its dynamics.