Cosmic R-string, R-tube and vacuum instability
| Autor: | Yuta Hamada, Minoru Eto, Kohei Kamada, Tatsuo Kobayashi, Keisuke Ohashi, Yutaka Ookouchi |
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| Rok vydání: | 2013 |
| Předmět: |
High Energy Physics - Theory
Physics Nuclear and High Energy Physics media_common.quotation_subject Winding number FOS: Physical sciences Radius String (physics) Universe Cosmic string High Energy Physics - Phenomenology High Energy Physics::Theory Domain wall (string theory) Theoretical physics High Energy Physics - Phenomenology (hep-ph) High Energy Physics - Theory (hep-th) ddc:530 Symmetry breaking False vacuum media_common |
| Zdroj: | Journal of high energy physics 2013(3), 159 (2013). doi:10.1007/JHEP03(2013)159 arXiv E-Print (only) (2012). |
| ISSN: | 1029-8479 |
| DOI: | 10.1007/jhep03(2013)159 |
| Popis: | We show that a cosmic string associated with spontaneous $U(1)_R$ symmetry breaking gives a constraint for supersymmetric model building. In some models, the string can be viewed as a tube-like domain wall with a winding number interpolating a false vacuum and a true vacuum. Such string causes inhomogeneous decay of the false vacuum to the true vacuum via rapid expansion of the radius of the tube and hence its formation would be inconsistent with the present Universe. However, we demonstrate that there exist metastable solutions which do not expand rapidly. Furthermore, when the true vacua are degenerate, the structure inside the tube becomes involved. As an example, we show a "bamboo"-like solution, which suggests a possibility observing an information of true vacua from outside of the tube through the shape and the tension of the tube. Comment: 28 pages, 17 figures, v2: references added, improved arguments in sec 3.5.2 |
| Databáze: | OpenAIRE |
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