Squeezed coherent states for gravitational well in noncommutative space

TL;DR

This paper investigates how noncommutative space affects quantum gravitational wells and constructs squeezed coherent states to explore potential tests of the weak equivalence principle in such settings.

Contribution

It introduces a method to construct squeezed coherent states in noncommutative space for gravitational wells, aiding in testing the quantum weak equivalence principle.

Findings

Solutions are squeezed-coherent states.

Uncertainty relations support classical-quantum bridging.

Framework applicable for testing WEP in NC-space.

Abstract

Gravitational well is a widely used system for the verification of the quantum weak equivalence principle (WEP). We have studied the quantum gravitational well (GW) under the shed of noncommutative (NC) space so that the results can be utilized for testing the validity of WEP in NC-space. To keep our study widely usable, we have considered both position-position and momentum-momentum noncommutativity. Since coherent state (CS) structure provides a natural bridging between the classical and quantum domain descriptions, the quantum domain validity of purely classical phenomena like free-fall under gravity might be verified with the help of CS. We have constructed CS with the aid of a Lewis-Riesenfeld phase space invariant operator. From the uncertainty relations deduced from the expectation values of the observables, we have shown that the solutions of the time-dependent Schr\"{o}dinger equation are squeezed-coherent states.