A new experiment for the gravitational waves detection

TL;DR

This paper proposes a novel experimental method to detect gravitational waves by analyzing pressure variations in a fluid caused by GWs, potentially offering higher sensitivity than previous approaches, despite practical noise challenges.

Contribution

The paper introduces a pioneering approach to GW detection based on fluid pressure variations, improving sensitivity over prior methods and discussing noise considerations.

Findings

Pressure variations in fluid can indicate GWs crossing

Potential sensitivity surpasses previous methods

Discussion of noise impacts on detection feasibility

Abstract

A new experiment for the gravitational waves (GWs) detection is proposed. It is indeed shown that the effect of GWs on sound waves (SWs) in a fluid is that GWs vary the pressure of the fluid by crossing it. This variation can be found by analysing the gauge of the local observer. It is shown that one can, in principle, detect GWs through the proposed new experiment. The variation of the pressure of the fluid, which represents detected signals, are indeed much higher than the correspondent values of GWs amplitudes. The examples of rotating neutron stars (NSs) and relic GWs are discussed. Remarkably, a confrontation of the proposed new method with a previous paper of Singh et al. on a similar approach shows a possible improvement of the sensitivity concerning the potential detection of GWs. It must be emphasized that this proposed procedure may be difficult in practical experiments because of the presence of different types of noise. For this reason, a Section of the paper is dedicated to the discussion of such noises. On the other hand, this paper must be considered as being pioneering in the new proposed approach. Thus, we hope in future, more precise studies of the noise which concerns the proposed new experiment will be done.