# Future Constraints on Dynamical Dark-Energy using Gravitational-Wave Standard Sirens

## TL;DR

Future gravitational wave observations, especially from the Einstein Telescope, could significantly improve constraints on dynamical dark energy models beyond current cosmological probes.

## Contribution

This study provides the first detailed forecast of how third-generation gravitational wave detectors can enhance constraints on dynamical dark energy models.

## Key findings

- GW data from Einstein Telescope greatly tightens dark energy parameters
- GW observations outperform traditional probes in constraining dark energy
- Simulated 1000 GW events used for parameter estimation

## Abstract

The detection of gravitational waves (GW) by the LIGO and Virgo collaborations offers a whole new range of possible tests and opens up a new window which may shed light on the nature of dark energy and dark matter. In the present work we investigate how future gravitational waves data could help to constrain different dynamical dark energy models. In particular, we perform cosmological forecastings of a class of well known and most used dynamical dark energy models using the third-generation gravitational wave detector, the Einstein Telescope. We have considered 1000 simulated GW events in order to constrain the parameter space of the dynamical dark energy models. Our analyses show that the inclusion of the GW data from the Einstein Telescope, significantly improves the parameter space of the dynamical dark energy models compared to their constraints extracted from the standard cosmological probes, namely, the cosmic microwave observations, baryon acoustic oscillations distance measurements, Supernove type Ia, and the Hubble parameter measurements.