The paper proposes inverse electroweak baryogenesis where baryon asymmetry arises from equilibrium sphaleron processes in the presence of a conserved global charge during an inverse phase transition that alters electroweak symmetry breaking strength.
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Electroweak baryogenesis
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abstract
Electroweak baryogenesis (EWBG) remains a theoretically attractive and experimentally testable scenario for explaining the cosmic baryon asymmetry. We review recent progress in computations of the baryon asymmetry within this framework and discuss their phenomenological consequences. We pay particular attention to methods for analyzing the electroweak phase transition and calculating CP-violating asymmetries, the development of Standard Model extensions that may provide the necessary ingredients for EWBG, and searches for corresponding signatures at the high energy, intensity, and cosmological frontiers.
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background 14representative citing papers
First complete two-loop calculation of electron EDM and LFV decay rates μ→eγ, τ→e/μγ in the unconstrained 2HDM with general Yukawas and phases, with public Python code.
Polarization interference in γ*→ℓ+ℓ− vanishes after lepton integration in exclusive V+jets at all α_s orders, with softened cancellations for W/Z due to parity violation and a formula for fiducial cuts.
Develops consistent CPV nTGC form factors in SMEFT and projects collider sensitivities from O(10^{-4}) at 250 GeV to O(10^{-8}) at 3-5 TeV.
An explicit model generates the observed baryon asymmetry via annihilogenesis of right-handed neutrinos confined in false-vacuum pockets during a strong first-order phase transition, relaxing the usual light-neutrino-mass upper bound on the CP asymmetry.
Polyakov loop contributions to the thermal effective potential soften electroweak phase transitions, disfavoring first-order transitions and suppressing gravitational-wave signals.
Dynamical LTE simulations reveal that heating wave formation often outlasts wall acceleration, yielding a revised maximal driving pressure criterion that weakens hydrodynamic obstruction compared to steady-state models.
Non-Gaussian primordial fluctuations of a Z2-symmetric spectator scalar trigger a strong first-order electroweak phase transition, with the field serving as cold dark matter and generating a stochastic gravitational wave background in the 10^{-3}-10^{-1} Hz band.
Derives gauge-invariant influence functionals for photons and Stueckelberg fields in open U(1) gauge EFTs via BRST on the in-in contour after integrating out matter.
The cS2HDM unifies a pseudo-Nambu-Goldstone dark matter candidate with electroweak baryogenesis in a two-Higgs-doublet plus complex singlet setup, featuring naturally suppressed DM-nucleon scattering and CP-violating Higgs interactions under flavour alignment.
A connected-cluster survival criterion in real-time lattice simulations yields false vacuum decay rates that match Hartree-resummed thermal benchmarks at high temperatures and converge with global-survival methods at low temperatures in the dilute regime.
First-order gradient CP-violating sources in EWBG quantum transport relax electron EDM bounds and increase viability compared to prior approximations in a model illustration.
Collapsing axion-like domain walls generate the baryon asymmetry by acting as an effective chemical potential through coupling to the electroweak topological term, with the asymmetry produced via sphaleron processes.
Filtered Dark Matter hydrodynamics during first-order phase transitions is modeled as a two-component fluid, yielding detonation-like and deflagration-like solutions in ballistic and local thermal equilibrium regimes that change relic abundance predictions.
Differences in filtering and delivery of rigid versus fragile dust to a planet-induced pressure bump reproduce carbonaceous chondrite compositions and ages in a single long-lived dust trap.
One-loop integration of a heavy fermion with inflaton-dependent mass in axion inflation generates localized gauge-field production and a detectable chiral gravitational-wave signal in the deci-hertz range.
Unimodular gravity with signature reversal symmetry in a D=2(2n+1)-dimensional bulk resolves the second cosmological constant problem by determining its specific small value.
In weak first-order phase transitions, subcritical bubbles reach percent-level volume fractions before critical nucleation when phases are nearly degenerate at Tn, invalidating the homogeneous-background assumption for points satisfying log10 f̂_ξ(Tn) ≃ -1.95.
A twist-6 light-cone QCD sum-rule calculation of B_d → Λ + dark antibaryon excludes dark masses around 2.8–3.6 GeV and leaves a surviving window at 4.108–4.164 GeV near the kinematic endpoint.
Multi-field tunneling analysis in a CP-violating NJL model yields a slow transition (β/H ~ 100) whose stochastic gravitational-wave signal is detectable by μAres and insensitive to the CP angle.
Observing vector boson fusion production of a heavy scalar followed by decay to Z h1 at muon colliders can establish CP violation in the scalar sector because it requires both h2VV and h2h1Z couplings to be nonzero.
A realistic Taiji-like analysis recovers an injected complex-singlet phase-transition gravitational-wave signal at relative SNR ≈ 53 with ln BF ≈ 11.6, and maps the spectrum posterior onto the Higgs cubic self-coupling deviation δκ3.
The paper supplies a unified framework and explicit translation dictionaries among the Higgs basis, κ's and angles, CP fractions, SMEFT, and Higgs EFT for describing CP-violating Higgs interactions.
Using simulated Taiji data, the authors show that a stochastic gravitational-wave signal from an electroweak phase transition in the singlet-extended Standard Model can constrain the Higgs cubic and quartic self-couplings.
citing papers explorer
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Inverse Electroweak Baryogenesis
The paper proposes inverse electroweak baryogenesis where baryon asymmetry arises from equilibrium sphaleron processes in the presence of a conserved global charge during an inverse phase transition that alters electroweak symmetry breaking strength.
-
Electron EDM and $\Gamma(\mu \to e \gamma)$ in the 2HDM
First complete two-loop calculation of electron EDM and LFV decay rates μ→eγ, τ→e/μγ in the unconstrained 2HDM with general Yukawas and phases, with public Python code.
-
Polarization interference in exclusive $V+$jets at all orders in $\alpha_s$
Polarization interference in γ*→ℓ+ℓ− vanishes after lepton integration in exclusive V+jets at all α_s orders, with softened cancellations for W/Z due to parity violation and a formula for fiducial cuts.
-
Probing CP-Violating Neutral Triple Gauge Couplings at Electron-Positron Colliders
Develops consistent CPV nTGC form factors in SMEFT and projects collider sensitivities from O(10^{-4}) at 250 GeV to O(10^{-8}) at 3-5 TeV.
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A Model of Annihilogenesis
An explicit model generates the observed baryon asymmetry via annihilogenesis of right-handed neutrinos confined in false-vacuum pockets during a strong first-order phase transition, relaxing the usual light-neutrino-mass upper bound on the CP asymmetry.
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Polyakov Loops Tame Phase Transitions
Polyakov loop contributions to the thermal effective potential soften electroweak phase transitions, disfavoring first-order transitions and suppressing gravitational-wave signals.
-
Dynamical evolution of the pressure on the bubble wall
Dynamical LTE simulations reveal that heating wave formation often outlasts wall acceleration, yielding a revised maximal driving pressure criterion that weakens hydrodynamic obstruction compared to steady-state models.
-
Electroweak First-Order Phase Transition Triggered by Non-Gaussian Fluctuations of a $\mathbb{Z}_2$-Symmetric Spectator Scalar
Non-Gaussian primordial fluctuations of a Z2-symmetric spectator scalar trigger a strong first-order electroweak phase transition, with the field serving as cold dark matter and generating a stochastic gravitational wave background in the 10^{-3}-10^{-1} Hz band.
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Gauging Open EFTs from the top down
Derives gauge-invariant influence functionals for photons and Stueckelberg fields in open U(1) gauge EFTs via BRST on the in-in contour after integrating out matter.
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Towards a Unified Framework for Pseudo-Nambu-Goldstone Dark Matter and Electroweak Baryogenesis
The cS2HDM unifies a pseudo-Nambu-Goldstone dark matter candidate with electroweak baryogenesis in a two-Higgs-doublet plus complex singlet setup, featuring naturally suppressed DM-nucleon scattering and CP-violating Higgs interactions under flavour alignment.
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False Vacuum Decay across the Quantum-to-Thermal Crossover: A Comparison of Real-Time Observables
A connected-cluster survival criterion in real-time lattice simulations yields false vacuum decay rates that match Hartree-resummed thermal benchmarks at high temperatures and converge with global-survival methods at low temperatures in the dilute regime.
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Does the Electron EDM Preclude Electroweak Baryogenesis ?
First-order gradient CP-violating sources in EWBG quantum transport relax electron EDM bounds and increase viability compared to prior approximations in a model illustration.
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Electroweak Baryogenesis from Collapsing Domain Walls
Collapsing axion-like domain walls generate the baryon asymmetry by acting as an effective chemical potential through coupling to the electroweak topological term, with the asymmetry produced via sphaleron processes.
-
Hydrodynamics of Filtered Dark Matter: A Two-Component Approach
Filtered Dark Matter hydrodynamics during first-order phase transitions is modeled as a two-component fluid, yielding detonation-like and deflagration-like solutions in ballistic and local thermal equilibrium regimes that change relic abundance predictions.
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Baryon Asymmetry from Electroweak-Symmetric Domain Walls
Differences in filtering and delivery of rigid versus fragile dust to a planet-induced pressure bump reproduce carbonaceous chondrite compositions and ages in a single long-lived dust trap.
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Axion Inflation from Heavy-Fermion One-Loop Effects
One-loop integration of a heavy fermion with inflaton-dependent mass in axion inflation generates localized gauge-field production and a detectable chiral gravitational-wave signal in the deci-hertz range.
-
Resolution of the cosmological constant problem by unimodular gravity and signature reversal symmetry
Unimodular gravity with signature reversal symmetry in a D=2(2n+1)-dimensional bulk resolves the second cosmological constant problem by determining its specific small value.
-
Subcritical bubble prehistory in weak first-order phase transition
In weak first-order phase transitions, subcritical bubbles reach percent-level volume fractions before critical nucleation when phases are nearly degenerate at Tn, invalidating the homogeneous-background assumption for points satisfying log10 f̂_ξ(Tn) ≃ -1.95.
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Constraints on the mass of the dark antibaryon using $B_d\rightarrow \Lambda \psi_{DS}$ channel in light cone QCD
A twist-6 light-cone QCD sum-rule calculation of B_d → Λ + dark antibaryon excludes dark masses around 2.8–3.6 GeV and leaves a surviving window at 4.108–4.164 GeV near the kinematic endpoint.
-
CP-violating multi-field phase transitions and gravitational waves in a hidden NJL sector
Multi-field tunneling analysis in a CP-violating NJL model yields a slow transition (β/H ~ 100) whose stochastic gravitational-wave signal is detectable by μAres and insensitive to the CP angle.
-
Model-independent probes of CP violation in the heavy scalar sector at muon colliders
Observing vector boson fusion production of a heavy scalar followed by decay to Z h1 at muon colliders can establish CP violation in the scalar sector because it requires both h2VV and h2h1Z couplings to be nonzero.
-
Bayesian analysis of the complex singlet model with phase transition gravitational waves
A realistic Taiji-like analysis recovers an injected complex-singlet phase-transition gravitational-wave signal at relative SNR ≈ 53 with ln BF ≈ 11.6, and maps the spectrum posterior onto the Higgs cubic self-coupling deviation δκ3.
-
Parametrisation and dictionary for CP violating Higgs boson interactions
The paper supplies a unified framework and explicit translation dictionaries among the Higgs basis, κ's and angles, CP fractions, SMEFT, and Higgs EFT for describing CP-violating Higgs interactions.
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Measuring gravitational wave spectrum from electroweak phase transition and Higgs self-couplings
Using simulated Taiji data, the authors show that a stochastic gravitational-wave signal from an electroweak phase transition in the singlet-extended Standard Model can constrain the Higgs cubic and quartic self-couplings.
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Finite-temperature Yang-Mills theories with the density of states method: towards the continuum limit
Density-of-states lattice study of the first-order phase transition in Sp(4) Yang-Mills theory at finite temperature, confirming metastability and surface tension for two temporal extents toward the continuum limit.
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Searching for apparent baryon number violation in $\Lambda_c^+$ decays at the Super Tau-Charm Facility
STCF with 1 ab^{-1} can probe several-TeV new-physics scales in sterile-neutrino EFT and constrain an RPV SUSY parameter to ~0.1 TeV^{-2} for apparent BNV in unexplored Lambda_c+ channels.
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Strong First-Order Electroweak Phase Transition and Gravitational Waves in a $\mathbb{Z}_4$ Fermion-Scalar Dark Matter Model
In a Z4 fermion-scalar dark matter model, strong first-order electroweak phase transitions and gravitational wave signals occur only in the thermal two-component regime with Mψ < MS < 2Mψ or the decay-driven WIMP-FIMP regime with MS > 2Mψ after dark matter constraints.
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A Deep Dive into Baryon Asymmetry -- the C2HDM
New BSMPT implementation of baryon asymmetry computation using WKB transport equations with moment truncations and VEV profile solving, validated in the C2HDM with uncertainty and GW interplay analysis.
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Detecting gravitational waves from cosmological phase transitions with LISA: an update
Updated LISA detection prospects for gravitational waves from phase transitions are derived from state-of-the-art sound-wave simulations, with a new web tool PTPlot provided for parameter scans.
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The Triadic Texture: Neutrino Predictions, Viable Vacuum, and Phenomenological Constraints
A new neutrino mass matrix texture under A4 x multiple Z symmetries predicts normal hierarchy, theta23 octant, and bounds on phases and masses in a seesaw model.
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Particle Cosmology
Particle cosmology integrates particle physics with cosmology to interpret the early universe as a natural high-energy laboratory and explain phenomena via theories like inflation, baryogenesis, and dark matter.