Domain walls and fermion scattering in grand unified models

D. A. Steer, Tanmay Vachaspati

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Motivated by grand unification, we study the properties of domain walls formed in a model with SU(5)×Z2 symmetry which is spontaneously broken to SU(3)×SU(2)×U(1)/Z6, and subsequently to SU(3)×U(1)/Z3. Even after the first stage of symmetry breaking, the SU(3) symmetry is broken to SU(2)×U(1)/Z2 on the domain wall. In a certain range of parameters, flux tubes carrying color- and hyper-charge live on the domain wall and appear as "boojums" when viewed from one side of the domain wall. Magnetic monopoles are also formed in the symmetry breaking and those carrying color and hyper-charge can be repelled from the wall due to the Meissner effect, or else their magnetic flux can penetrate the domain wall in quantized units. After the second stage of symmetry breaking, fermions can transmute when they scatter with the domain wall, providing a simpler version of fermion-monopole scattering: for example, neutrinos can scatter into d-quarks, leaving behind electric charge and color which is carried by gauge field excitations living on the domain wall.

Original languageEnglish (US)
Article number105021
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume73
Issue number10
DOIs
StatePublished - 2006
Externally publishedYes

Fingerprint

Domain Wall
Fermions
domain wall
fermions
Scattering
scattering
broken symmetry
Symmetry Breaking
Charge
Scatter
color
Model
Magnetic Monopoles
Symmetry
Meissner effect
magnetic monopoles
Monopole
Gauge Field
electric charge
Unification

ASJC Scopus subject areas

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

Cite this

Domain walls and fermion scattering in grand unified models. / Steer, D. A.; Vachaspati, Tanmay.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 73, No. 10, 105021, 2006.

Research output: Contribution to journalArticle

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