On the validity of perturbative studies of the electroweak phase transition in the Two Higgs Doublet model

被引：86

作者：

Kainulainen, Kimmo ^{[1
]}

Keus, Venus ^{[2
,3
]}

Niemi, Lauri ^{[2
,3
]}

Rummukainen, Kari ^{[2
,3
]}

Tenkanen, Tuomas V. I. ^{[4
]}

Vaskonen, Ville ^{[5
]}

机构：

[1] Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland

[2] Dept Phys, POB 64, FI-00014 Helsinki, Finland

[3] Helsinki Inst Phys, POB 64, FI-00014 Helsinki, Finland

[4] Univ Bern, Inst Theoret Phys, Albert Einstein Ctr Fundamental Phys, Sidlerstr 5, CH-3012 Bern, Switzerland

[5] Kings Coll London, Phys Dept, London WC2R 2LS, England

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2019年 / 06期

基金：

欧盟地平线“2020”; 芬兰科学院; 英国科学技术设施理事会;

关键词：

Effective Field Theories; Thermal Field Theory; Cosmology of Theories beyond the SM; Lattice Quantum Field Theory; TEMPERATURE DIMENSIONAL REDUCTION; BARYON ASYMMETRY; STANDARD MODEL; CP-VIOLATION; 3D PHYSICS; BARYOGENESIS; LATTICE; SECTOR; MSSM; CONSTRAINTS;

D O I：

10.1007/JHEP06(2019)075

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

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.

引用

页数：39