6533b7d4fe1ef96bd126282a
RESEARCH PRODUCT
On the validity of perturbative studies of the electroweak phase transition in the Two Higgs Doublet model
Venus KeusKari RummukainenTuomas V. I. TenkanenKimmo KainulainenLauri NiemiVille Vaskonensubject
Nuclear and High Energy PhysicsParticle physicsPhase transition530 PhysicsSTANDARD MODELFOS: Physical sciencesSECTORParameter space114 Physical sciences3D PHYSICS01 natural scienceslattice quantum field theoryCOSMOLOGY OF THEORIES BEYOND THE SMTwo-Higgs-doublet modelHigh Energy Physics - LatticeHigh Energy Physics - Phenomenology (hep-ph)Lattice (order)BARYON ASYMMETRY0103 physical sciencesEffective field theoryeffective field theorieslcsh:Nuclear and particle physics. Atomic energy. RadioactivityResummation010306 general physicscosmology of theories beyond the SMLATTICE QUANTUM FIELD THEORYPhysicsPP COLLISIONS010308 nuclear & particles physicsHigh Energy Physics - Lattice (hep-lat)High Energy Physics::PhenomenologyElectroweak interactionBOSONTHERMAL FIELD THEORYBARYOGENESISthermal field theoryLATTICEHigh Energy Physics - PhenomenologyCP-VIOLATIONTEMPERATURE DIMENSIONAL REDUCTIONlcsh:QC770-798EFFECTIVE FIELD THEORIESdescription
Abstract Making use of a dimensionally-reduced effective theory at high temperature, we perform a nonperturbative study of the electroweak phase transition in the Two Higgs Doublet model. We focus on two phenomenologically allowed points in the parameter space, carrying out dynamical lattice simulations to determine the equilibrium properties of the transition. We discuss the shortcomings of conventional perturbative approaches based on the resummed effective potential — regarding the insufficient handling of infrared resummation but also the need to account for corrections beyond 1-loop order in the presence of large scalar couplings — and demonstrate that greater accuracy can be achieved with perturbative methods within the effective theory. We find that in the presence of very large scalar couplings, strong phase transitions cannot be reliably studied with any of the methods.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-06-01 |