Ultracold quantum wires with localized losses: Many-body quantum Zeno effect
Heinrich Fröml, Christopher Muckel, Corinna Kollath, Alessio Chiocchetta, Sebastian Diehl
Abstract
The effect of localized loss on a one-dimensional gas of interacting fermions is investigated. Here, the interplay of gapless quantum fluctuations and particle interactions strongly renormalizes the dissipative impurity. As a result, the loss probability for modes close to the Fermi energy vanishes for arbitrary strength of the dissipation, as a many-body incarnation of the quantum Zeno effect. This is reflected in the shape of the particle momentum distribution, exhibiting a peak close to the Fermi momentum.
Topics & Concepts
PhysicsQuantum Zeno effectRenormalizationPosition and momentum spaceQuantum mechanicsFermionRenormalization groupGapless playbackQuantumMomentum (technical analysis)Luttinger liquidQuantum dissipationCondensed matter physicsEconomicsFinanceCold Atom Physics and Bose-Einstein CondensatesQuantum many-body systemsStrong Light-Matter Interactions