Chiral Gravitational Waves and Baryon Superfluid Dark Matter

TL;DR

This paper proposes a unified model where chiral gravitational waves induce baryon asymmetry and dark matter formation through gravitational anomalies in a strongly interacting dark quark sector, leading to a dark baryon superfluid with potential observable signatures.

Contribution

It introduces a novel model linking gravitational anomalies to both baryogenesis and dark matter, featuring a dark baryon superfluid formed from dark quarks in an SU(2) gauge theory.

Findings

Dark baryon superfluid forms from dark quark condensation.

Gravitational waves induce baryon asymmetry via gravitational anomaly.

The model offers a new dark matter candidate with distinctive phenomenology.

Abstract

We develop a unified model of darkgenesis and baryogenesis involving strongly interacting dark quarks, utilizing the gravitational anomaly of chiral gauge theories. In these models, both the visible and dark baryon asymmetries are generated by the gravitational anomaly induced by the presence of chiral primordial gravitational waves. We provide a concrete model of an SU(2) gauge theory with two massless quarks. In this model, the dark quarks condense and form a dark baryon charge superfluid (DBS), in which the Higgs-mode acts as cold dark matter. We elucidate the essential features of this dark matter scenario and discuss its phenomenological prospects.