6533b7d1fe1ef96bd125cd83
RESEARCH PRODUCT
Primordial dark matter from curvature induced symmetry breaking
Tommi MarkkanenTommi MarkkanenLaura LaulumaaSami Nurmisubject
Cosmology and Nongalactic Astrophysics (astro-ph.CO)Dark matterScalar (mathematics)FOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)Astrophysics::Cosmology and Extragalactic AstrophysicsCurvature01 natural sciences114 Physical sciencessymmetry breakingGeneral Relativity and Quantum Cosmologypimeä aineGeneral Relativity and Quantum CosmologyHigh Energy Physics - Phenomenology (hep-ph)0103 physical sciencesprimordial dark matterSymmetry breakinginflationAdiabatic processMathematical physicsPhysicsInflation (cosmology)symmetriadark matter theory010308 nuclear & particles physicsAstronomy and AstrophysicsCoupling (probability)Symmetry (physics)quantum field theory on curved spaceHigh Energy Physics - PhenomenologyAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
We demonstrate that adiabatic dark matter can be generated by gravity induced symmetry breaking during inflation. We study a $Z_2$ symmetric scalar singlet that couples to other fields only through gravity and for which the symmetry is broken by the spacetime curvature during inflation when the non-minimal coupling $\xi$ is negative. We find that the symmetry breaking leads to the formation of adiabatic dark matter with the observed abundance for the singlet mass $m\sim{\rm MeV}$ and $|\xi|\sim 1$.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-05-08 |