Аннотация

We study the evolution of thick domain walls in the different models of cosmological inflation, in the matter-dominated and radiation-dominated universe, or more generally in the universe with the equation of state p= wρ. We have found that the domain wall evolution crucially depends on the time-dependent parameter C(t)=1/(H(t)δ0)2, where H(t) is the Hubble parameter and δ0 is the thickness of the wall in flat space-time. For C(t) > 2 the physical thickness of the wall, a(t) δ(t) , tends with time to δ0, which is microscopically small. Otherwise, when C(t) ≤ 2 , the wall steadily expands and can grow up to a cosmologically large size.

Язык оригиналаанглийский
Номер статьи855
Число страниц13
ЖурналEuropean Physical Journal C
Том78
Номер выпуска10
DOI
СостояниеОпубликовано - 25 окт 2018

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