RG flows in Non-Perturbative Gauge-Higgs Unification II. Effective action for the Higgs phase near the quantum phase transition
| Autor: | Nikos Irges, Fotis Koutroulis |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Quantum phase transition
Physics High Energy Physics - Theory Physics and Astronomy (miscellaneous) 010308 nuclear & particles physics Scalar (mathematics) FOS: Physical sciences Boundary (topology) lcsh:Astrophysics 01 natural sciences Symmetry (physics) Higgs phase Theoretical physics High Energy Physics - Phenomenology High Energy Physics - Phenomenology (hep-ph) High Energy Physics - Theory (hep-th) lcsh:QB460-466 0103 physical sciences Higgs boson lcsh:QC770-798 lcsh:Nuclear and particle physics. Atomic energy. Radioactivity Boundary value problem 010306 general physics Engineering (miscellaneous) Effective action |
| Zdroj: | European Physical Journal C: Particles and Fields, Vol 81, Iss 2, Pp 1-44 (2021) European Physical Journal |
| Popis: | We construct the zero temperature (no compact dimensions) effective action for an SU(2) Yang-Mills theory in five dimensions, with boundary conditions that reduce the symmetry on the four-dimensional boundary located at the origin to a U(1)-complex scalar system. In order to be sensitive to the Higgs phase, we need to include higher dimensional operators in the effective action, which can be naturally achieved by generating it by expanding the corresponding lattice construction in small lattice spacing, taking the naive continuum limit and then renormalizing. In addition, we build in the effective action non-perturbative information, related to a first order quantum phase transition known to exist. As a result, the effective action acquires a finite cut-off that is low and the fine tuning of the scalar mass is rather mild. 75 pages, 11 figures, Extra comments added to the conclusions, Published in the European Physical Journal C |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|