Quench dynamics of two interacting atoms in a one-dimensional anharmonic trap
arXiv:2111.02321 · doi:10.1016/j.physe.2022.115228
Abstract
A temporal response of two interacting particles to a quench of the coupling strength in one-dimensional harmonic and anharmonic traps is explored. The coupling strength is changed from repulsive to attractive interactions and vice versa. The time evolution of the fidelity, wave packet, one-body reduced density matrix and momentum distributions is analyzed in details. It was found that impacts of the pre- and postquench states interchange during the dynamics. In the case of the anharmonic trap additional contribution of the center-of-mass excited states comes into play and the whole evolution becomes significantly altered. Yet the impact of the pre- and postquench states in some cases still could be identified. The quench dynamics of the ground and excited states are considered.
References in corpus (32)
- Many-Body Physics with Ultracold Gases
- Atomic Scattering in Presence of an External Confinement and a Gas of Impenetrable Bosons
- One dimensional Bosons: From Condensed Matter Systems to Ultracold Gases
- Interatomic collisions in a tightly confined Bose gas
- Fermionization of two distinguishable fermions
- Confinement-Induced Resonances in Low-Dimensional Quantum Systems
- Pairing in few-fermion systems with attractive interactions
- Multiconfigurational time-dependent Hartree approaches for indistinguishable particles
- Spin-resolved single-atom imaging of Li in free space
- Confinement induced resonances in anharmonic waveguides
- Quantum Register of Fermion Pairs
- Non-linear Breit-Wheeler process in short laser double-pulses
- Bethe logarithm for the helium atom
- Tunneling dynamics of two interacting one-dimensional particles
- Exact theoretical description of two ultracold atoms in a single site of a 3D optical lattice using realistic interatomic interaction potentials
- Anharmonicity Induced Resonances for Ultracold Atoms and their Detection
- Theory of inelastic confinement-induced resonances due to the coupling of center-of-mass and relative motion
- Theoretical description of two ultracold atoms in finite 3D optical lattices using realistic interatomic interaction potentials
- Pump Probe Spectroscopy of Bose Polarons: Dynamical Formation and Coherence
- Tunneling of two bosonic atoms from a one-dimensional anharmonic trap
- Quench Dynamics of Two One-Dimensional Harmonically Trapped Bosons Bridging Attraction and Repulsion
- Transport of the repulsive Bose-Einstein condensate in a double-well trap: interaction impact and relation to Josephson effect
- Dynamics of a few interacting bosons escaping from an open well
- Capturing non-exponential dynamics in the presence of two decay channels
- Improving Efficiency of Sympathetic Cooling in Atom-Ion and Atom-Atom Confined Collisions
- Two-body quench dynamics of harmonically trapped interacting particles
- Description of ultracold atoms in a one-dimensional geometry of a harmonic trap with a realistic interaction
- Study of autonomous conservative oscillator using an improved perturbation method
- Probing Quantum States with Momentum Boosts
- Resonance phenomena in the annular array of underdamped Josephson junctions
- Two Rydberg-dressed atoms escaping from an open well
- Anharmonicity-Induced Criticality of Collective Excitation in a Trapped Bose-Einstein Condensate