Gravity Resonance Spectroscopy and Einstein-Cartan Gravity

TL;DR

This paper discusses the use of gravity resonance spectroscopy with ultracold neutrons to explore gravitational effects, including torsion, providing a novel quantum approach to test gravitational theories.

Contribution

It introduces a new experimental method using quantum interference of neutrons to investigate gravitational parameters, especially torsion, in Einstein-Cartan gravity.

Findings

Demonstrates the feasibility of GRS with neutrons for gravity measurements

Provides insights into torsion effects in gravitational interactions

Opens new avenues for quantum tests of gravitational theories

Abstract

The qBounce experiment offers a new way of looking at gravitation based on quantum interference. An ultracold neutron is reflected in well-defined quantum states in the gravity potential of the Earth by a mirror, which allows to apply the concept of gravity resonance spectroscopy (GRS). This experiment with neutrons gives access to all gravity parameters as the dependences on distance, mass, curvature, energy-momentum as well as on torsion. Here, we concentrate on torsion.