Kazan Federal University Digital Repository

Classical transitions with the topological number changing in the early Universe

Show simple item record

dc.date.accessioned 2019-01-22T20:53:22Z
dc.date.available 2019-01-22T20:53:22Z
dc.date.issued 2018
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/149274
dc.description.abstract © 2018 IOP Publishing Ltd and Sissa Medialab. We consider classical dynamics of two real scalar fields within a model with the potential having a saddle point. The solitons of such model are field configurations that have the form of closed loops in the field space. We study the formation and evolution of these solitons, in particular, the conditions at which they could be formed even when the model potential has only one minimum. These non-trivial field configurations represent domain walls in the three-dimensional physical space. The set of these configurations can be split into disjoint equivalence classes. We provide a simple expression for the winding number of an arbitrary closed loop in the field space and discuss the transitions that change the winding number. We also show that non-trivial field configurations could be responsible for the energy density excess that could evade the CMB constraints but could be important at scales which are responsible for the formation of galaxies and the massive primordial black holes.
dc.subject Cosmic strings
dc.subject domain walls
dc.subject monopoles
dc.subject physics of the early universe
dc.title Classical transitions with the topological number changing in the early Universe
dc.type Article
dc.relation.ispartofseries-issue 4
dc.relation.ispartofseries-volume 2018
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS-2018-2018-4-SID85046032118


Files in this item

This item appears in the following Collection(s)

  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

Show simple item record

Search DSpace


Advanced Search

Browse

My Account

Statistics