Cosmological Constant, Dark Matter, and Electroweak Phase Transition

Abstract

Accepting the fine tuned cosmological constant hypothesis, we have recently proposed that this hypothesis can be tested if the dark matter freeze out occurs at the electroweak scale and if one were to measure an anomalous shift in the dark matter relic abundance. In this paper, we numerically compute this relic abundance shift in the context of explicit singlet extensions of the Standard Model and explore the properties of the phase transition which would lead to the observationally most favorable scenario. Through the numerical exploration, we explicitly identify a parameter space in a singlet extension of the standard model which gives order unity observable effects. We also clarify the notion of a temperature dependence in the vacuum energy.

58 pages, 10 figures

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Cited by in corpus (27)

• CosmoTransitions: Computing Cosmological Phase Transition Temperatures and Bubble Profiles with Multiple Fields
• Electroweak baryogenesis and dark matter from a singlet Higgs
• Electroweak baryogenesis and gravitational waves from a real scalar singlet
• Probing the Electroweak Phase Transition with Higgs Factories and Gravitational Waves
• Filtered Dark Matter at a First Order Phase Transition
• Inert Doublet Dark Matter with Strong Electroweak Phase Transition
• Fermi-ball dark matter from a first-order phase transition
• Electroweak bubble wall expansion: gravitational waves and baryogenesis in Standard Model-like thermal plasma
• Improved sphaleron decoupling condition and the Higgs coupling constants in the real singlet-extended SM
• Ultra-relativistic bubbles from the simplest Higgs portal and their cosmological consequences
• Improved Electroweak Phase Transition with Subdominant Inert Doublet Dark Matter
• Gravitational waves from first order electroweak phase transition in models with the $U(1{)}_X^{}$ gauge symmetry
• Revisiting electroweak phase transition in the standard model with a real singlet scalar
• Strongly First Order Phase Transitions Near an Enhanced Discrete Symmetry Point
• Filtered pseudo-scalar dark matter and gravitational waves from first order phase transition
• Toward verification of electroweak baryogenesis by electric dipole moments
• Electroweak phase transition in the economical 3-3-1 model
• Thermal Dark Energy
• Probing Electroweak Baryogenesis induced by extra bottom Yukawa coupling via EDMs and collider signatures
• Electroweak phase transition in the reduced minimal 3-3-1 model
• Sphaleron in the first-order electroweak phase transition with the dimension-six Higgs operator
• Baryogenesis in the Zee-Babu model with arbitrary $\xi$ gauge
• Non-thermal production of heavy vector dark matter from relativistic bubble walls
• Dual electroweak phase transition in the two-Higgs-doublet model with the $S_3$ discrete symmetry
• Multi-period structure of electro-weak phase transition in the 3-3-1-1 model
• Electro-weak Phase Transition With Three Phases in The $SU(2{)}_1\otimes SU(2{)}_2\otimes U(1{)}_Y$ Model
• Twin electroweak bubble nucleation and gravitational wave under the $S_3$ symmetry of two-Higgs-doublet model