scholarly journals Relic abundance of asymmetric Dark Matter in quintessence

2014 ◽  
Vol 54 ◽  
pp. 125-131 ◽  
Author(s):  
Hoernisa Iminniyaz ◽  
Xuelei Chen
Keyword(s):  
Dark Matter ◽  
Asymmetric Dark Matter ◽  
Relic Abundance

scholarly journals Relic abundance of asymmetric Dark Matter

2011 ◽  
Vol 2011 (07) ◽  
pp. 003-003 ◽  
Author(s):  
Hoernisa Iminniyaz ◽  
Manuel Drees ◽  
Xuelei Chen
Keyword(s):  
Dark Matter ◽  
Asymmetric Dark Matter ◽  
Relic Abundance

scholarly journals Asymmetric dark matter and the scalar-tensor model

2016 ◽  
Vol 31 (07) ◽  
pp. 1650021 ◽  
Author(s):  
Shun-Zhi Wang ◽  
Hoernisa Iminniyaz ◽  
Mamatrishat Mamat
Keyword(s):  
Dark Matter ◽  
Parameter Space ◽  
Expansion Rate ◽  
Tensor Model ◽  
Hubble Expansion ◽  
Cosmological Scenario ◽  
Relic Density ◽  
Asymmetric Dark Matter ◽  
Relic Abundance

The relic abundance of asymmetric dark matter particles in the scalar-tensor model is analyzed in this paper. We extend the numerical and analytical calculations of the relic density of the asymmetric dark matter in the standard cosmological scenario to the nonstandard cosmological scenario. We focus on the scalar-tensor model. Hubble expansion rate is changed in the nonstandard cosmological scenario. This leaves its imprint on the relic density of dark matter particles. In this paper we investigate to what extent the asymmetric dark matter particle’s relic density is changed in the scalar-tensor model. We use the observed present day dark matter abundance to find the constraints on the parameter space in this model.

scholarly journals Gravitational wave signals of dark matter freeze-out

2021 ◽  
Vol 2021 (2) ◽  
Author(s):  
Danny Marfatia ◽  
Po-Yan Tseng
Keyword(s):  
Phase Transition ◽  
Dark Matter ◽  
Gravitational Waves ◽  
Order Phase Transition ◽  
First Order ◽  
Stochastic Background ◽  
First Order Phase Transition ◽  
Relic Abundance ◽  
First Order Phase ◽  
Freeze Out

Abstract We study the stochastic background of gravitational waves which accompany the sudden freeze-out of dark matter triggered by a cosmological first order phase transition that endows dark matter with mass. We consider models that produce the measured dark matter relic abundance via (1) bubble filtering, and (2) inflation and reheating, and show that gravitational waves from these mechanisms are detectable at future interferometers.

scholarly journals Dark Matter production from relativistic bubble walls

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Aleksandr Azatov ◽  
Miguel Vanvlasselaer ◽  
Wen Yin
Keyword(s):  
Phase Transition ◽  
Dark Matter ◽  
Electroweak Phase Transition ◽  
First Order ◽  
Matter Production ◽  
First Order Phase Transition ◽  
Relic Abundance ◽  
Higgs Portal ◽  
First Order Phase ◽  
Gravitational Background

Abstract In this paper we present a novel mechanism for producing the observed Dark Matter (DM) relic abundance during the First Order Phase Transition (FOPT) in the early universe. We show that the bubble expansion with ultra-relativistic velocities can lead to the abundance of DM particles with masses much larger than the scale of the transition. We study this non-thermal production mechanism in the context of a generic phase transition and the electroweak phase transition. The application of the mechanism to the Higgs portal DM as well as the signal in the Stochastic Gravitational Background are discussed.

scholarly journals Twin Higgs Asymmetric Dark Matter

2015 ◽  
Vol 115 (12) ◽  
Author(s):  
Isabel García García ◽  
Robert Lasenby ◽  
John March-Russell
Keyword(s):  
Dark Matter ◽  
Asymmetric Dark Matter

scholarly journals Non-perturbative effect on thermal relic abundance of dark matter

2007 ◽  
Vol 646 (1) ◽  
pp. 34-38 ◽  
Author(s):  
Junji Hisano ◽  
Shigeki Matsumot ◽  
Minoru Nagai ◽  
Osamu Saito ◽  
Masato Senami
Keyword(s):  
Dark Matter ◽  
Relic Abundance

scholarly journals Asymmetric dark matter annihilation as a test of non-standard cosmologies

2013 ◽  
Vol 2013 (08) ◽  
pp. 003-003 ◽  
Author(s):  
Graciela B Gelmini ◽  
Ji-Haeng Huh ◽  
Thomas Rehagen
Keyword(s):  
Dark Matter ◽  
Dark Matter Annihilation ◽  
Asymmetric Dark Matter

scholarly journals Asymmetric dark matter stars

2015 ◽  
Vol 92 (6) ◽  
Author(s):  
Chris Kouvaris ◽  
Niklas Grønlund Nielsen
Keyword(s):  
Dark Matter ◽  
Asymmetric Dark Matter

scholarly journals Resurrecting low-mass axion dark matter via a dynamical QCD scale

2021 ◽  
Vol 2021 (12) ◽  
Author(s):  
Lucien Heurtier ◽  
Fei Huang ◽  
Tim M.P. Tait
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Temperature Dependent ◽  
Axion Field ◽  
Wide Range ◽  
The Standard Model ◽  
Low Mass ◽  
Higher Temperature ◽  
Relic Abundance ◽  
Dependent Mass

Abstract In the framework where the strong coupling is dynamical, the QCD sector may confine at a much higher temperature than it would in the Standard Model, and the temperature-dependent mass of the QCD axion evolves in a non-trivial way. We find that, depending on the evolution of ΛQCD, the axion field may undergo multiple distinct phases of damping and oscillation leading generically to a suppression of its relic abundance. Such a suppression could therefore open up a wide range of parameter space, resurrecting in particular axion dark-matter models with a large Peccei-Quinn scale fa ≫ 1012 GeV, i.e., with a lighter mass than the standard QCD axion.

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