Relaxation from particle production

Abstract

We consider using particle production as a friction force by which to implement a "Relaxion" solution to the electroweak hierarchy problem. Using this approach, we are able to avoid superplanckian field excursions and avoid any conflict with the strong CP problem. The relaxation mechanism can work before, during or after inflation allowing for inflationary dynamics to play an important role or to be completely decoupled.

12 pages, 1 figures. v2: expanded discussion and reorganized some sections; fixed discussion about destruction of the condensate; accepted for publication in JHEP

References in corpus (19)

• Constraining Warm Dark Matter candidates including sterile neutrinos and light gravitinos with WMAP and the Lyman-alpha forest
• Cosmological Relaxation of the Electroweak Scale
• Large Nongaussianity in Axion Inflation
• Naturally inflating on steep potentials through electromagnetic dissipation
• A Clockwork Axion
• Beauty is Attractive: Moduli Trapping at Enhanced Symmetry Points
• Phenomenology of a Pseudo-Scalar Inflaton: Naturally Large Nongaussianity
• Realizing the relaxion from multiple axions and its UV completion with high scale supersymmetry
• A Measure of de Sitter Entropy and Eternal Inflation
• Hard Art of the Universe Creation
• Can slow roll inflation induce relevant helical magnetic fields?
• Cosmological Higgs-Axion Interplay for a Naturally Small Electroweak Scale
• On the nature of the electroweak phase transition
• Natural Heavy Supersymmetry
• Electroweak relaxation from finite temperature
• Relaxing the Electroweak Scale: the Role of Broken dS Symmetry
• Naturalizing Supersymmetry with a Two-Field Relaxion Mechanism
• Mirror Cosmological Relaxation of the Electroweak Scale
• N-Relaxion: Large Field Excursions from a Few Site Relaxion Model

Cited by in corpus (68)

• Recent Progress in the Physics of Axions and Axion-Like Particles
• Relaxion Stars and their detection via Atomic Physics
• Phenomenology of relaxion-Higgs mixing
• Gauge Field and Fermion Production during Axion Inflation
• Opening up the QCD axion window
• The Photophobic ALP
• Audible Axions
• Chiral Anomaly, Schwinger Effect, Euler-Heisenberg Lagrangian, and application to axion inflation
• Gravitational wave probes of axion-like particles
• Clockwork Axions in Cosmology: Is Chromonatural Inflation Chrononatural?
• Axion Fragmentation
• Coherent relaxion dark matter
• Probing ALPs and the Axiverse with Superconducting Radiofrequency Cavities
• Probing the Relaxed Relaxion at the Luminosity and Precision Frontiers
• Dark Energy Radiation
• Dynamics of Relaxed Inflation
• Inflating to the Weak Scale
• Dynamics of the cosmological relaxation after reheating
• Higgs relaxation after inflation
• Relaxation of the Cosmological Constant
• Relaxion and light (pseudo)scalars at the HL-LHC and lepton colliders
• Electroweak Baryogenesis from Temperature-Varying Couplings
• Minimal warm inflation with complete medium response
• Gravitational wave background from non-Abelian reheating after axion-like inflation
• The Hierarchion, a Relaxion Addressing the Standard Model's Hierarchies
• Probing the relaxed relaxion and Higgs-portal with S1 & S2
• Relaxion Fluctuations (Self-stopping Relaxion) and Overview of Relaxion Stopping Mechanisms
• Relaxation of the Composite Higgs Little Hierarchy
• The Nelson-Barr Relaxion
• Collider searches of scalar singlets across lifetimes
• Search for the production of W${}^{\pm }$W${}^{\pm }$W${}^{\mp }$ events at $\sqrt{s}=$ 13 TeV
• Gravitational Wave Echo of Relaxion Trapping
• Low-Scale D-term Inflation and the Relaxion
• Cosmological Relaxation through the Dark Axion Portal
• Runaway Relaxion from Finite Density
• Relaxion Dark Matter
• All-in-one Relaxion, a unified solution to five BSM puzzles
• From axion quality and naturalness problems to a high-quality ${\mathbb{Z}}_N$ QCD relaxion
• Constraints on the relaxion mechanism with strongly interacting vector-fermions
• Out-of-the-box Baryogenesis During Relaxation
• Axion dark matter from frictional misalignment
• Off-shell renormalization in Higgs effective field theories
• Leptogenesis in Cosmological Relaxation with Particle Production
• Fast-Rolling Relaxion
• The Muon Smasher's Guide
• Probing ALPs at the CERN Gamma Factory
• Paper-boat relaxion
• Very low scale Coleman-Weinberg inflation with non-minimal coupling
• Attracting the Electroweak Scale to a Tachyonic Trap
• The Super-Planckian Axion Strikes Back
• A warped relaxion
• Cosmological Relaxation from Dark Fermion Production
• The Stochastic Relaxion
• B-modes from Post-inflationary Gravitational Waves Sourced by Axionic Instabilities at Cosmic Reionization
• Probing photophobic (rel)axion dark matter
• Light Higgs Boson from a Pole Attractor
• Dynamic scale anomalous transport in QCD with electromagnetic background
• Gravitational tests of electroweak relaxation
• Dynamical relaxation in 2HDM models
• Group Theoretic Approach to Fermion Production
• A comprehensive study of ALPs from $B$-decays
• Hierarchies from Landscape Probability Gradients and Critical Boundaries
• Gravitational Signatures of Axion Dark Matter via Parity-Violating Interactions
• Gravitational relaxation of electroweak hierarchy problem
• Supercooled Audible Axions
• Non-perturbative reheating and Nnaturalness
• Mixing Particle Production for Relaxion Mechanism
• Axion Fragmentation on the Lattice