Symmetry Nonrestoration at High Temperature and the Monopole Problem

Gia Dvali; Alejandra Melfo; Goran Senjanović

doi:10.1103/PhysRevLett.75.4559

Symmetry Nonrestoration at High Temperature and the Monopole Problem

Gia Dvali, Alejandra Melfo, and Goran Senjanović

Phys. Rev. Lett. 75, 4559 – Published 18 December 1995

Abstract

We show that there exists a range of parameters in SU(5) theory for which the grand unified theory symmetry remains broken at high temperature, thus avoiding the phase transition that gives rise to the overproduction of monopoles. The thermal production of monopoles can be naturally suppressed, keeping their number density below the cosmological limits.

Received 11 July 1995

DOI:https://doi.org/10.1103/PhysRevLett.75.4559

Authors & Affiliations

Gia Dvali^*

Dipartimento di Fisica, Universita di Pisa and INFN, Sezione di Pisa, I-56100, Pisa, Italy and Institute of Physics, Georgian Academy of Sciences, 380077 Tbilisi, Georgia

Alejandra Melfo^†

International School for Advanced Studies, 34014 Trieste, Italy and Centro de Astrofísica Teórica, Universidad de Los Andes, Mérida 5101-A, Venezuela

Goran Senjanović^‡

International Center for Theoretical Physics, 34100 Trieste, Italy

^*Present address CERN, CH-1211 Geneva 23, Switzerland. Electronic address: dvali@surya11.cern.ch
^†Electronic address: melfo@stardust.sissa.it
^‡Electronic address: goran@ictp.trieste.it