CP-Violating solitons in the early universe

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Solitons in extensions of the Standard Model can serve as localized sources of CP violation. Depending on their stability properties, they may serve either to create or to deplete the baryon asymmetry. The conditions for existence of a particular soliton candidate, the membrane solution of the two-Higgs model, are presented. In the generic case, investigated by Bachas and Tomaras, membranes exist and are metastable for a wide range of parameters. For the more viable supersymmetric case, it is shown that the present-day existence of CP-violating membranes is experimentally excluded, but preliminary studies suggest that they may have existed in the ... continued below

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9 p.

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Tornkvist, O. & Riotto, A. July 1, 1997.

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Solitons in extensions of the Standard Model can serve as localized sources of CP violation. Depending on their stability properties, they may serve either to create or to deplete the baryon asymmetry. The conditions for existence of a particular soliton candidate, the membrane solution of the two-Higgs model, are presented. In the generic case, investigated by Bachas and Tomaras, membranes exist and are metastable for a wide range of parameters. For the more viable supersymmetric case, it is shown that the present-day existence of CP-violating membranes is experimentally excluded, but preliminary studies suggest that they may have existed in the early universe soon after the electroweak phase transition, with important consequences for the baryon asymmetry of the universe.

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9 p.

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INIS; OSTI as DE97053606

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  • Fundamental Physics at the Birth of the Universe II, Rome (Italy), 19-24 May 1997

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  • Other: DE97053606
  • Report No.: FNAL/C--97/179-A
  • Report No.: CONF-9705201--
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 565056
  • Archival Resource Key: ark:/67531/metadc696549

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  • July 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • April 1, 2016, 3:49 p.m.

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Tornkvist, O. & Riotto, A. CP-Violating solitons in the early universe, article, July 1, 1997; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc696549/: accessed August 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.