Domain wall

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A domain wall is a type of topological soliton that occurs whenever a discrete symmetry is spontaneously broken. Domain walls are also sometimes called kinks in analogy with closely related kink solution of the sine-Gordon model or models with polynomial potentials. [1] [2] [3] Unstable domain walls can also appear if spontaneously broken discrete symmetry is approximate and there is a false vacuum.

Contents

A domain (hyper volume) is extended in three spatial dimensions and one time dimension. A domain wall is the boundary between two neighboring domains. Thus a domain wall is extended in two spatial dimensions and one time dimension.

Important examples are:

Besides these important cases similar solitons appear in wide spectrum of the models. Here are other examples:

References

  1. Lohe, M.A. (1979). "Soliton structures in $P(\phi)_2$". Physical Review D. 20 (12): 3120–3130. Bibcode:1979PhRvD..20.3120L. doi:10.1103/PhysRevD.20.3120.
  2. Gani, V.A.; Kudryavtsev, A.E.; Lizunova, M.A. (2014). "Kink interactions in the (1+1)-dimensional φ^6 model". Physical Review D. 89 (12): 125009. arXiv: 1402.5903 . Bibcode:2014PhRvD..89l5009G. doi:10.1103/PhysRevD.89.125009. S2CID   119333950.
  3. Gani, V.A.; Lensky, V.; Lizunova, M.A. (2015). "Kink excitation spectra in the (1+1)-dimensional φ^8 model". Journal of High Energy Physics. 2015 (8): 147. arXiv: 1506.02313 . doi:10.1007/JHEP08(2015)147. ISSN   1029-8479. S2CID   54184500.
  4. V. A. Rubakov and M. E. Shaposhnikov, Do we live inside a domain wall?, Physics Letters B 125 (1983), 136–138.
  5. V. Dzhunushaliev, V. Folomeev, M. Minamitsuji, Thick brane solutions, Rept.Prog.Phys. 73 (2010).

Further reading