Dark-matter particles and baryons from inflation and spontaneous CP violation in the early universe

Abstract

We present aspects of a model which attempts to unify the creation of cold dark matter, a CP-violating baryon asymmetry, and also a small, residual vacuum energy density, in the early universe. The model contains a primary scalar (inflaton) field and a primary pseudoscalar field, which are initially related by a cosmological, chiral symmetry. The nonzero vacuum expectation value of the pseudoscalar field spontaneously breaks CP invariance.

7 pages, appendix added

References in corpus (2)

• CP noninvariance and an effective cosmological constant: the energy density in a pseudoscalar field which arises from a cosmological, spontaneously-broken chiral symmetry
• Long-range interactions between dark-matter particles in a model with a cosmological, spontaneously-broken chiral symmetry

Cited by in corpus (1)

• Uses of a small field value which falls from a metastable maximum over cosmological times