Correlation versus dissipation in a non-Hermitian Anderson impurity model
arXiv:2408.03494 · doi:10.1103/PhysRevB.111.125157
Abstract
We analyze the competition between strong correlations and dissipation in quantum impurity systems from the Kondo regime to the valence fluctuation regime by developing a slave-boson theory for a non-Hermitian Anderson impurity model with one-body loss. Notably, in the non-Hermitian Kondo regime, strong correlations qualitatively change the nature of dissipation through renormalization effects, where the effective one-body loss is suppressed and emergent many-body dissipation characterized by the complex-valued hybridization is generated. We unveil the mechanism of a dissipative quantum phase transition of the Kondo state on the basis of this renormalization effect, which counterintuitively enhances the lifetime of the impurity against loss. We also find a crossover from the non-Hermitian Kondo regime to the valence fluctuation regime dominated by one-body dissipation. Our results can be tested in a wide variety of setups such as quantum dots coupled to electronic leads and quantum point contacts in ultracold Fermi gases.
20 pages, 7 figures, to appear in Physical Review B
References in corpus (42)
- Many-Body Physics with Ultracold Gases
- Non-Hermitian Physics
- Quantum States and Phases in Driven Open Quantum Systems with Cold Atoms
- Quantum trajectories and open many-body quantum systems
- Electrodynamics of Correlated Electron Materials
- Tools for quantum simulation with ultracold atoms in optical lattices
- Strong dissipation inhibits losses and induces correlations in cold molecular gases
- Observation of Non-Hermitian Skin Effect and Topology in Ultracold Atoms
- Signatures of Many-Body Localization in a Controlled Open Quantum System
- Visualizing heavy fermions emerging in a quantum critical Kondo lattice
- Dissipation induced Tonks-Girardeau gas in an optical lattice
- Entanglement and purification transitions in non-Hermitian quantum mechanics
- Exact Liouvillian Spectrum of a One-Dimensional Dissipative Hubbard Model
- Two-dimensional non-Hermitian skin effect in an ultracold Fermi gas
- Universal properties of dissipative Tomonaga-Luttinger liquids: Case study of a non-Hermitian XXZ spin chain
- Collective Excitations and Nonequilibrium Phase Transition in Dissipative Fermionic Superfluids
- Ultracold quantum wires with localized losses: many-body quantum Zeno effect
- Theory of superconductivity with non-Hermitian and parity-time reversal symmetric cooper pairing symmetry
- Exceptional Spin Liquids from Couplings to the Environment
- Localization properties in disordered quantum many-body dynamics under continuous measurement
- Generic transport formula for a system driven by Markovian reservoirs
- Observation of the Sign Reversal of the Magnetic Correlation in a Driven-Dissipative Fermi Gas in Double Wells
- Kubo formula for non-Hermitian systems and tachyon optical conductivity
- -symmetric, non-Hermitian quantum many-body physics -- a methodological perspective
- Non-equilibrium metastable state in a chain of interacting spinless fermions with localized loss
- Superfluid signatures in a dissipative quantum point contact
- Universal description of dissipative Tomonaga-Luttinger liquids with SU() spin symmetry: Exact spectrum and critical exponents
- Symmetry-protected transport through a lattice with a local particle loss
- Non-Hermitian quantum impurity systems in and out of equilibrium: noninteracting case
- Exact description of transport and non-reciprocity in monitored quantum devices
- Nonlinear transport in the presence of a local dissipation
- Rectification in Nonequilibrium Steady States of Open Many-Body Systems
- Yang-Lee Zeros, Semicircle Theorem, and Nonunitary Criticality in Bardeen-Cooper-Schrieffer Superconductivity
- Comparative study for two-terminal transport through a lossy one-dimensional quantum wire
- Complex fixed points of the non-Hermitian Kondo model in a Luttinger liquid
- Fractional Quantum Zeno Effect Emerging from Non-Hermitian Physics
- Modeling Particle Loss in Open Systems using Keldysh Path Integral and Second Order Cumulant Expansion
- Diagrammatic Monte Carlo for Dissipative Quantum Impurity Models
- Theory of non-Hermitian fermionic superfluidity on a honeycomb lattice: Interplay between exceptional manifolds and van Hove Singularity
- Universal conductance of a PT-symmetric Luttinger liquid after a quantum quench
- Kondo effect in a non-Hermitian, -symmetric Anderson model with Rashba spin-orbit coupling
- Phase diagram of non-Hermitian BCS superfluids in a dissipative asymmetric Hubbard model