scholarly journals Phase transitions and gravitational wave tests of pseudo-Goldstone dark matter in the softly broken U(1) scalar singlet model

2019 ◽  
Vol 99 (11) ◽  
Author(s):  
Kristjan Kannike ◽  
Martti Raidal
Keyword(s):  
Dark Matter ◽  
Phase Transitions ◽  
Gravitational Wave ◽  
Scalar Singlet

scholarly journals Phase transition gravitational waves from pseudo-Nambu-Goldstone dark matter and two Higgs doublets

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Zhao Zhang ◽  
Chengfeng Cai ◽  
Xue-Min Jiang ◽  
Yi-Lei Tang ◽  
Zhao-Huan Yu ◽  
...  
Keyword(s):  
Dark Matter ◽  
Phase Transitions ◽  
Gravitational Wave ◽  
Gravitational Waves ◽  
Direct Detection ◽  
Vacuum Expectation ◽  
Scalar Fields ◽  
Dark Matter Candidate ◽  
First Order ◽  
Relic Abundance

Abstract We investigate the potential stochastic gravitational waves from first-order electroweak phase transitions in a model with pseudo-Nambu-Goldstone dark matter and two Higgs doublets. The dark matter candidate can naturally evade direct detection bounds, and can achieve the observed relic abundance via the thermal mechanism. Three scalar fields in the model obtain vacuum expectation values, related to phase transitions at the early Universe. We search for the parameter points that can cause first-order phase transitions, taking into account the existed experimental constraints. The resulting gravitational wave spectra are further evaluated. Some parameter points are found to induce strong gravitational wave signals, which have the opportunity to be detected in future space-based interferometer experiments LISA, Taiji, and TianQin.

scholarly journals Gravitational wave, collider and dark matter signals from a scalar singlet electroweak baryogenesis

2017 ◽  
Vol 2017 (8) ◽  
Author(s):  
Ankit Beniwal ◽  
Marek Lewicki ◽  
James D. Wells ◽  
Martin White ◽  
Anthony G. Williams
Keyword(s):  
Dark Matter ◽  
Gravitational Wave ◽  
Scalar Singlet

Various types of holographic metal/superconductor phase transitions with dark matter sector

2016 ◽  
Vol 26 (06) ◽  
pp. 1750046
Author(s):  
Yan Peng ◽  
Tao Chen ◽  
Guohua Liu ◽  
Pengwei Ma
Keyword(s):  
Phase Transition ◽  
Black Hole ◽  
Dark Matter ◽  
Phase Transitions ◽  
Transition Temperature ◽  
De Sitter ◽  
Holographic Superconductor ◽  
Black Hole Background ◽  
Critical Phase ◽  
Matter Sector

We generalize the holographic superconductor model with dark matter sector by including the Stückelberg mechanism in the four-dimensional anti-de Sitter (AdS) black hole background away from the probe limit. We study effects of the dark matter sector on the [Formula: see text]-wave scalar condensation and find that the dark matter sector affects the critical phase transition temperature and also the order of phase transitions. At last, we conclude that the dark matter sector brings richer physics in this general metal/superconductor system.

scholarly journals Minimal scoto-seesaw mechanism with spontaneous CP violation

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
D. M. Barreiros ◽  
F. R. Joaquim ◽  
R. Srivastava ◽  
J. W. F. Valle
Keyword(s):  
Dark Matter ◽  
Cp Violation ◽  
Vacuum Expectation ◽  
Vacuum Expectation Value ◽  
Discrete Symmetry ◽  
Double Beta Decay ◽  
Neutrino Masses ◽  
Seesaw Mechanism ◽  
Cosmological Observations ◽  
Scalar Singlet

Abstract We propose simple scoto-seesaw models to account for dark matter and neutrino masses with spontaneous CP violation. This is achieved with a single horizontal $$ {\mathcal{Z}}_8 $$ Z 8 discrete symmetry, broken to a residual $$ {\mathcal{Z}}_2 $$ Z 2 subgroup responsible for stabilizing dark matter. CP is broken spontaneously via the complex vacuum expectation value of a scalar singlet, inducing leptonic CP-violating effects. We find that the imposed $$ {\mathcal{Z}}_8 $$ Z 8 symmetry pushes the values of the Dirac CP phase and the lightest neutrino mass to ranges already probed by ongoing experiments, so that normal-ordered neutrino masses can be cornered by cosmological observations and neutrinoless double beta decay experiments.

scholarly journals Testing Dark Matter models with radio telescopes in light of gravitational wave astronomy

2018 ◽  
Vol 782 ◽  
pp. 732-736 ◽  
Author(s):  
Andrea Addazi ◽  
Yi-Fu Cai ◽  
Antonino Marcianò
Keyword(s):  
Dark Matter ◽  
Gravitational Wave ◽  
Radio Telescopes

scholarly journals Dark matter reflection of particle symmetry

2017 ◽  
Vol 32 (15) ◽  
pp. 1740001 ◽  
Author(s):  
Maxim Yu. Khlopov
Keyword(s):  
Dark Matter ◽  
Phase Transitions ◽  
Symmetry Breaking ◽  
Early Universe ◽  
Topological Defects ◽  
Elementary Particles ◽  
Nonlinear Structures ◽  
The Relationship ◽  
New Particles

In the context of the relationship between physics of cosmological dark matter and symmetry of elementary particles, a wide list of dark matter candidates is possible. New symmetries provide stability of different new particles and their combination can lead to a multicomponent dark matter. The pattern of symmetry breaking involves phase transitions in the very early Universe, extending the list of candidates by topological defects and even primordial nonlinear structures.

scholarly journals General properties of the gravitational wave spectrum from phase transitions

2009 ◽  
Vol 79 (8) ◽  
Author(s):  
Chiara Caprini ◽  
Ruth Durrer ◽  
Thomas Konstandin ◽  
Géraldine Servant
Keyword(s):  
Phase Transitions ◽  
Gravitational Wave ◽  
Wave Spectrum ◽  
General Properties
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