# Probing Quantum Chaos in many-body quantum systems by the induced dissipation

## TL;DR

This paper investigates how induced dissipation affects the depletion dynamics in a many-body quantum system, revealing a $t^{1/3}$ scaling law and providing a method to probe quantum chaos through site occupation measurements.

## Contribution

It introduces a theoretical analysis of depletion dynamics in a chaotic regime, highlighting how dissipation reveals quantum chaos signatures in cold atom systems.

## Key findings

- Depletion of one site causes gradual depletion of neighboring sites.
- Depletion follows a $t^{1/3}$ scaling law in the chaotic regime.
- Measuring site occupations can reveal quantum chaos characteristics.

## Abstract

We theoretically analyze the depletion dynamics of an ensemble of cold atoms in a quasi one-dimensional optical lattice where atoms in one of the lattice sites are subject to decay. Unlike the previous studies of this problem in R. Labouvie, {\em et. al}, Phys. Rev. Lett. {\bf 116}, 235302 (2016) we focus on the case where the system is brought to the chaotic regime, that crucially modifies the depletion dynamics as compared to the regular case. It is shown that depletion of the affected site results in gradual depletion of the neighbouring sites according to $t^{1/3}$ scaling law. We also show that by measuring occupations of the lattice sites one can extract important information on chaotic dynamics of the original conservative system.