Two-body recombination in a quantum mechanical lattice gas: Entropy generation and probing of short-range magnetic correlations

TL;DR

This paper investigates entropy generation in a 1D bosonic lattice with two-particle losses, demonstrating the robustness of correlation functions and proposing two-body losses as a probe for magnetic correlations.

Contribution

It introduces an empirical model for entropy production and shows how two-particle losses can be used to probe short-range magnetic correlations in a 1D lattice.

Findings

Entropy can be modeled empirically in 1D bosonic systems with losses.

Correlation functions remain robust despite two-particle losses.

Two-body losses can serve as a probe for magnetic correlations.

Abstract

We study entropy generation in a one-dimensional (1D) model of bosons in an optical lattice experiencing two-particle losses. Such heating is a major impediment to observing exotic low temperature states, and "simulating" condensed matter systems. Developing intuition through numerical simulations, we present a simple empirical model for the entropy produced in this 1D setting. We also explore the time evolution of one and two particle correlation functions, showing that they are robust against two-particle loss. Because of this robustness, induced two-body losses can be used as a probe of short range magnetic correlations.