On Sphaleron Heating in the Presence of Fermions

Abstract

Axion-like particles with a coupling to non-Abelian gauge fields at finite temperature can experience dissipation due to sphaleron heating. This could play an important role for warm inflation or dynamical dark energy. We investigate to what degree the efficiency of this non-perturbative mechanism depends on the details of the underlying particle physics model. For a wide range of scenarios and energy scales, we find that a previously discussed suppression of sphaleron heating by light fermions can be alleviated. As an outlook, we point out that fermionic effects may provide a new mechanism for ending warm inflation.

31 pages, 1 figure; v2: minor improvements and updated references, matches published version

References in corpus (54)

• The landscape of QCD axion models
• Matter and Antimatter in the Universe
• The Sphaleron Rate in the Minimal Standard Model
• Warm Inflation and its Microphysical Basis
• Black Hole Bound on the Number of Species and Quantum Gravity at LHC
• CMB-S4: Forecasting Constraints on Primordial Gravitational Waves
• The Sphaleron Rate in SU(N) Gauge Theory
• Inflation and the Scale Dependent Spectral Index: Prospects and Strategies
• Perturbative Thermal QCD: Formalism and Applications
• Thermal Friction as a Solution to the Hubble Tension
• Gravitational Waves as a Big Bang Thermometer
• Minimal Warm Inflation
• Gravitational wave background from Standard Model physics: Complete leading order
• Baryon Asymmetry and Gravitational Waves from Pseudoscalar Inflation
• Gauge-field production during axion inflation in the gradient expansion formalism
• Chiral Anomaly, Schwinger Effect, Euler-Heisenberg Lagrangian, and application to axion inflation
• Updated design of the CMB polarization experiment satellite LiteBIRD
• CMB constraints on the inflaton couplings and reheating temperature in $\alpha$-attractor inflation
• Recent developments in warm inflation
• Lattice Simulations of Axion-U(1) Inflation
• Theory of non-Gaussianity in warm inflation
• Dissipative Axial Inflation
• Dark Energy Radiation
• Thermalized Axion Inflation
• Instability in axion inflation with strong backreaction from gauge modes
• Wash-In Leptogenesis
• Revealing the Cosmic History with Gravitational Waves
• Warm dark energy
• Minimal warm inflation with complete medium response
• Gravitational wave background from non-Abelian reheating after axion-like inflation
• Axion inflation in the strong-backreaction regime: decay of the Anber-Sorbo solution
• Wash-in leptogenesis after axion inflation
• Warming up cold inflation
• WarmSPy: a numerical study of cosmological perturbations in warm inflation
• Gravitational wave background from vacuum and thermal fluctuations during axion-like inflation
• Shapes of non-Gaussianity in warm inflation
• Hypermagnetogenesis from axion inflation: Model-independent estimates
• Lattice simulations of Abelian gauge fields coupled to axions during Inflation
• Evolution of the Primordial Axial Charge across Cosmic Times
• Natural inflation at the GUT scale
• Axion assisted Schwinger effect
• SU(2)${}_R$ and its Axion in Cosmology: A common Origin for Inflation, Cold Sterile Neutrinos, and Baryogenesis
• Non-equilibrium dynamics of a scalar field with quantum backreaction
• Shape of the hot topological charge density spectral function
• Dark Fermions and Spontaneous $CP$ violation in $SU(2)$-axion Inflation
• LiteBIRD and CMB-S4 Sensitivities to Reheating in Plateau Models of Inflation
• Axion dark matter from frictional misalignment
• Chiral Anomaly in SU(2)${}_R$-Axion Inflation and the New Prediction for Particle Cosmology
• Early-Universe Model Building
• Chirality production during axion inflation
• General Markovian Equation for Scalar Fields in a Slowly Evolving Background
• The limits of the strong $CP$ problem
• Strong-$CP$ with and without gravity
• The Cosmology of Dark Energy Radiation

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• AliCPT Sensitivity to Cosmic Reheating