# Dynamics of a few interacting bosons escaping from an open well

@article{Dobrzyniecki2018DynamicsOA,
title={Dynamics of a few interacting bosons escaping from an open well},
author={Jacek Dobrzyniecki and Tomasz Sowi'nski},
journal={Physical Review A},
year={2018}
}
• Published 13 April 2018
• Physics
• Physical Review A
The dynamics of a few ultra-cold bosons tunneling from a one-dimensional potential well into open space is studied. In such a system several decay channels can be distinguished, each corresponding to a different number of bosons escaping simultaneously. We show that as the interparticle interaction strength is changed, the system undergoes transitions between distinct regimes characterized by the dominance of different decay channels. These transitions are reflected in the behavior of the decay…
10 Citations

## Figures from this paper

### Momentum correlations of a few ultracold bosons escaping from an open well

• Physics
Physical Review A
• 2019
The dynamical properties of a one-dimensional system of two bosons escaping from an open potential well are studied in terms of the momentum distributions of particles. It is shown that the single-

### Two Rydberg-dressed atoms escaping from an open well

• Physics
• 2020
A comprehensive analysis of the dynamics of two Rydberg-dressed particles (bosons or fermions) tunneling from a potential well into open space is provided. We show that the dominant decay mechanism

### Capturing nonexponential dynamics in the presence of two decay channels

• Physics
• 2020
The most unstable quantum states and elementary particles possess more than a single decay channel. At the same time, it is well known that typically the decay law is not simply exponential.

### Tunneling of two interacting atoms from excited states

• Physics
Physica E: Low-dimensional Systems and Nanostructures
• 2019

### One-dimensional mixtures of several ultracold atoms: a review

• Physics
Reports on progress in physics. Physical Society
• 2019
The recent advances on trapped Bose-Fermi mixtures are described, which allow for a theoretical combination of previous concepts, well illustrating the importance of quantum statistics and inter-particle interactions.

### Imaginary-time mean-field method for collective tunneling

• Physics
Physical Review C
• 2020
Background: Quantum tunneling in many-body systems is the subject of many experimental and theoretical studies in fields ranging from cold atoms to nuclear physics. However, theoretical description

### Decay properties of unstable Tonks-Girardeau gases from a split trap

We study the decay properties of Tonks-Girardeau gases escaping from a double-well potential. Initially, the gases are constrained between two infinite $\delta$ barriers with an on-center

## References

SHOWING 1-10 OF 61 REFERENCES

### Tunneling decay of two interacting bosons in an asymmetric double-well potential: A spectral approach

• Physics
• 2013
We study the full-fledged microscopic dynamics of two interacting, ultracold bosons in a one- dimensional double-well potential, through the numerically exact diagonalization of the many-body

### Tunneling dynamics of few bosons in a double well

• Physics
• 2008
We study few-boson tunneling in a one-dimensional double well. As we pass from weak interactions to the fermionization limit, the Rabi oscillations first give way to highly delayed pair tunneling

### Exact decay and tunnelling dynamics of interacting few-boson systems

• Physics
• 2009
The decay and tunnelling dynamics of repulsive few-boson systems through a one-dimensional potential barrier is studied from first principles. To this end, we solve the numerically exact

### Pairing in few-fermion systems with attractive interactions.

• Physics
Physical review letters
• 2013
From the tunneling time scales, this work infer the differences in interaction energies of systems with different number of particles, which show a strong odd-even effect, similar to the one observed for neutron separation experiments in nuclei.

### Decay modes of two repulsively interacting bosons

• Physics
• 2011
We study the decay of two repulsively interacting bosons tunnelling through a delta potential barrier by a direct numerical solution of the time-dependent Schrödinger equation. The solutions are

### Tunneling theory for tunable open quantum systems of ultracold atoms in one-dimensional traps

• Physics
• 2015
The creation of tunable open quantum systems is becoming feasible in current experiments with ultracold atoms in low-dimensional traps. In particular, the high degree of experimental control over

### Few-boson dynamics in double wells: from single-atom to correlated pair tunneling.

• Physics
Physical review letters
• 2008
This work investigates few-boson tunneling in a one-dimensional double well and finds that the tunneling dynamics of two atoms evolves from Rabi oscillations to correlated pair tunneling as the authors increase the interaction strength.

### How an interacting many-body system tunnels through a potential barrier to open space

• Physics
Proceedings of the National Academy of Sciences
• 2012
This work analyzes a full, numerically exact many-body solution of the Schrödinger equation of a one-dimensional system with repulsive interactions tunneling to open space and shows how the emitted particles dissociate or fragment from the trapped and coherent source of bosons.

### Tunneling of two bosonic atoms from a one-dimensional anharmonic trap

• Physics
• 2017
We investigate the quantum dynamics of two interacting bosonic atoms confined in a one-dimensional anharmonic trap. The tunneling rate, an experimentally measurable parameter of the system, was

### Pair tunneling of two atoms out of a trap

A simple theory for the tunneling of two cold atoms out of a trap in the presence of an attractive contact force is developed. Two competing decay channels, respectively for single-atom and