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General vacuum stability of orbifold gauge breaking and application to asymptotic grand unification

Cacciapaglia, Giacomo ; Cornell, Alan S. ; Deandrea, Aldo ; Isnard, Wanda ; Pasechnik, Roman LU ; Preda, Anca LU and Wang, Zhi Wei (2025) In Physical Review D 111(9).
Abstract

We examine the vacuum stability of gauge symmetry breaking in five dimensions, compactified on the S1/(Z2×Z2′) orbifold. We consider SU(N), Sp(N), SO(2N), and SO(2N+1) theories in the bulk, and provide an exhaustive classification of possible parity assignments that lead to stable orbifolds and of the corresponding symmetry breaking patterns. We use these results in the search for viable asymptotic grand unification theories (aGUT), testing the stability criteria on models based on SU(6) and SU(8). As a result, we identify two viable aGUTs: a unique SU(6) pathway down to the Standard Model, and one SU(8) model leading to an intermediate Pati-Salam partial unification.

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author
; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
111
issue
9
article number
095013
publisher
American Physical Society
external identifiers
  • scopus:105005152939
ISSN
2470-0010
DOI
10.1103/PhysRevD.111.095013
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2025 authors. Published by the American Physical Society.
id
80965adf-8293-49b9-b18e-ea710135ea38
date added to LUP
2025-08-06 15:48:21
date last changed
2025-08-06 15:48:59
@article{80965adf-8293-49b9-b18e-ea710135ea38,
  abstract     = {{<p>We examine the vacuum stability of gauge symmetry breaking in five dimensions, compactified on the S1/(Z2×Z2′) orbifold. We consider SU(N), Sp(N), SO(2N), and SO(2N+1) theories in the bulk, and provide an exhaustive classification of possible parity assignments that lead to stable orbifolds and of the corresponding symmetry breaking patterns. We use these results in the search for viable asymptotic grand unification theories (aGUT), testing the stability criteria on models based on SU(6) and SU(8). As a result, we identify two viable aGUTs: a unique SU(6) pathway down to the Standard Model, and one SU(8) model leading to an intermediate Pati-Salam partial unification.</p>}},
  author       = {{Cacciapaglia, Giacomo and Cornell, Alan S. and Deandrea, Aldo and Isnard, Wanda and Pasechnik, Roman and Preda, Anca and Wang, Zhi Wei}},
  issn         = {{2470-0010}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{9}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review D}},
  title        = {{General vacuum stability of orbifold gauge breaking and application to asymptotic grand unification}},
  url          = {{http://dx.doi.org/10.1103/PhysRevD.111.095013}},
  doi          = {{10.1103/PhysRevD.111.095013}},
  volume       = {{111}},
  year         = {{2025}},
}