Dynamical formation of polarons in a Bose-Einstein condensate: A variational approach
arXiv:2012.11591 · doi:10.1103/PhysRevA.103.033323
Abstract
We investigate the non-equilibrium dynamics of an impurity coupled to a Bose-Einstein condensate, systematically compared with recent experimental results [M. G. Skou et al., Nat. Phys. (2021)]. The dynamics of the impurity is tracked down by using a time-dependent variational coherent ansatz. For weak coupling between the impurity and the bath, analytical expressions for the time-dependent overlap (or contrast) are derived, matching quite well with previous findings obtained within a master equation approach. For strong coupling instead, the variational ansatz provides a good quantitative description of the polaron dynamics, in particular, in signaling the transition from the few to the many-body correlated regime where polarons are expected to form.
arXiv comment9 pages, 4 figures
References in corpus (40)
- Many-Body Physics with Ultracold Gases
- Feshbach Resonances in Ultracold Gases
- Dynamical Quantum Phase Transitions in the Transverse Field Ising Model
- Observation of Fermi Polarons in a Tunable Fermi Liquid of Ultracold Atoms
- Metastability and Coherence of Repulsive Polarons in a Strongly Interacting Fermi Mixture
- Observation of Attractive and Repulsive Polarons in a Bose-Einstein Condensate
- Attractive and repulsive Fermi polarons in two dimensions
- Bose polarons in the strongly interacting regime
- Ultrafast many-body interferometry of impurities coupled to a Fermi sea
- Repulsive Fermi polarons in a resonant mixture of ultracold Li atoms
- Bose polarons near quantum criticality
- Impurity in a Bose-Einstein condensate and the Efimov effect
- Quantum dynamics of ultracold Bose polarons
- Quasiparticle properties of a mobile impurity in a Bose-Einstein condensate
- Creation of Rydberg Polarons in a Bose Gas
- Variational study of polarons in Bose-Einstein condensates
- Non-equilibrium quantum dynamics and formation of the Bose polaron
- Quantum droplets of dipolar mixtures
- Using polarons for sub-nK quantum non-demolition thermometry in a Bose-Einstein condensate
- Quench Dynamics and Orthogonality Catastrophe of Bose Polarons
- Analyzing a Bose polaron across resonant interactions
- Short-Time Operator Product Expansion for rf Spectroscopy of a Strongly-interacting Fermi Gas
- Interferometric Measurements of Many-body Topological Invariants using Mobile Impurities
- Real-Time Dynamics of an Impurity in an Ideal Bose Gas in a Trap
- Single-atom quantum probes for ultracold gases using nonequilibrium spin dynamics
- Real-space dynamics of attractive and repulsive polarons in Bose-Einstein condensates
- Quantum dynamics of impurities coupled to a Fermi sea
- Critical slowdown of non-equilibrium polaron dynamics
- Repulsive polarons in two-dimensional Fermi gases
- Variational approach for impurity dynamics at finite temperature
- Polarons in a Dipolar Condensate
- Prethermalization in the cooling dynamics of an impurity in a BEC
- Strong coupling Bose polarons out of equilibrium: Dynamical RG approach
- Dropping an impurity into a Chern insulator: a polaron view on topological matter
- Dissipative correlated dynamics of a moving impurity immersed in a Bose-Einstein Condensate
- Loschmidt Echo in Many-Body Localized Phase
- Ground-state properties of Dipolar Bose polarons
- Non-Markovian polaron dynamics in a trapped Bose-Einstein condensate
- Topological polarons, quasiparticle invariants and their detection in 1D symmetry-protected phases
- Breakdown of Polarons in Conducting Polymers at Device Field Strengths
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- Quantum behavior of a heavy impurity strongly coupled to a Bose gas
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- Many-body bound states and induced interactions of charged impurities in a bosonic bath
- An impurity in a heteronuclear two-component Bose mixture
- Life and death of the Bose polaron
- Quench Dynamics of the Ideal Bose Polaron at Zero and Nonzero Temperatures
- Renormalization group study of Bose polarons
- Non-equilibrium dynamics of dipolar polarons
- Fermi polaron in low-density spin-polarized neutron matter
- Dynamics of polaron formation in 1D Bose gases in the strong-coupling regime
- Modified mean field ansatz for charged polarons in a Bose-Einstein condensate
- Stochastic-field approach to the quench dynamics of the one-dimensional Bose polaron
- Universal quantum dynamics of Bose polarons
- Fermi polaron in atom-ion hybrid systems