Gravitational-Wave Signatures of Chiral-Symmetric Technicolor

TL;DR

This paper investigates gravitational wave signals from a chiral-symmetric technicolor model's early Universe phase transitions, highlighting potential detectability by future space-based observatories and emphasizing the role of gravitational waves in probing new physics.

Contribution

It introduces the gravitational wave signatures of a specific technicolor model, demonstrating their potential observability and complementarity to collider experiments.

Findings

Multiple phase transition patterns identified within viable parameters.

Predicted gravitational wave signals are detectable by future space-based detectors.

Highlights the importance of gravitational wave astronomy in exploring beyond Standard Model physics.

Abstract

A chiral-symmetric technicolor model successfully reconciles the tension between electroweak precision tests and traditional technicolor models. Focusing on its simplest realization preserving the conventional Higgs mechanism, we study its primordial gravitational wave signatures originating from first order phase transitions in the early Universe. We found that abundant phase transition patterns arise from a physically viable parameter space. Besides, we have also found gravitational wave signals possibly visible by future experiments, such as LISA, BBO and u-DECIGO. Our results stress the importance of gravitational wave detectors in exploring new physics complementary to ground colliders in the multi-messenger astronomy era.