Non-perturbative fixed points and renormalization group improved effective potential

Author(s)

Dias, A. G. ^[1] ; Gomez, J. D. ^[1] ; Natale, A. A. ^{[1, 2]} ; Quinto, A. G. ^[1] ; Ferrari, A. F. ^[1]

Affiliation

^[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP - Brazil

^[2] Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo - Brazil

• Document type: Journal article
• Source: Physics Letters B; v. 739, p. 8-12, DEC 12 2014.
• Web of Science Citations: 4

Abstract

The stability conditions of a renormalization group improved effective potential have been discussed in the case of scalar QED and QCD with a colorless scalar. We calculate the same potential in these models assuming the existence of non-perturbative fixed points associated witha conformal phase. In the case of scalar QED the barrier of instability found previously is barely displaced as we approach the fixed point, and in the case of QCD with a colorless scalar not only the barrier is changed but the local minimum of the potential is also changed. (C) 2014 The Authors. Published by Elsevier B.V. (AU)

• FAPESP's process: 13/22079-8 - Physics of particles and fields: standard model and its extensions
• Grantee: Adriano Antonio Natale
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 13/24065-4 - Strong interaction phenomenology
• Grantee: John David Gomez Aguirre
• Support Opportunities: Scholarships in Brazil - Doctorate