SU(5) monopoles and the dual standard model

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We find the spectrum of magnetic monopoles produced in the symmetry breaking SU(5)→[SU(3)×SU(2)×U(1)′]/Z6 by constructing classical bound states of the fundamental monopoles. The spectrum of monopoles is found to correspond to the spectrum of one family of standard model fermions and, hence, is a starting point for constructing the dual standard model. At this level, however, there is an extra monopole state - the "diquark" monopole - with no corresponding standard model fermion. If the SU(3) factor now breaks down to Z3, the monopoles with nontrivial SU(3) charge get confined by strings in SU(3) singlets. Another outcome of this symmetry breaking is that the diquark monopole becomes unstable (metastable) to fragmentation into fundamental monopoles and the one-one correspondence with the standard model fermions is restored. We discuss the fate of the monopoles if the [SU(2)×U(1)′]/Z2 factor breaks down to U(1)Q by a Higgs mechanism as in the electroweak model. Here we find that monopoles that are misaligned with the vacuum get connected by strings even though the electroweak symmetry breaking does not admit topological strings. We discuss the lowest order quantum corrections to the mass spectrum of monopoles.

Original languageEnglish (US)
Pages (from-to)1300-1312
Number of pages13
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume56
Issue number2
StatePublished - Jul 15 1997
Externally publishedYes

Fingerprint

Monopole
monopoles
Standard Model
Symmetry Breaking
Fermions
broken symmetry
strings
Strings
fermions
Breakdown
breakdown
electroweak model
Magnetic Monopoles
magnetic monopoles
One to one correspondence
Fragmentation
Higgs
Bound States
mass spectra
Lowest

ASJC Scopus subject areas

  • Mathematical Physics
  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

Cite this

SU(5) monopoles and the dual standard model. / Liu, Hong; Vachaspati, Tanmay.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 56, No. 2, 15.07.1997, p. 1300-1312.

Research output: Contribution to journalArticle

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