TY - JOUR

T1 - Evolution of thick domain walls in inflationary and p= wρ universe

AU - Dolgov, A. D.

AU - Godunov, S. I.

AU - Rudenko, A. S.

N1 - Publisher Copyright: © 2018, The Author(s).

PY - 2018/10/25

Y1 - 2018/10/25

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85055737292&partnerID=8YFLogxK

U2 - 10.1140/epjc/s10052-018-6350-7

DO - 10.1140/epjc/s10052-018-6350-7

M3 - Article

AN - SCOPUS:85055737292

VL - 78

JO - European Physical Journal C

JF - European Physical Journal C

SN - 1434-6044

IS - 10

M1 - 855

ER -