RT Journal Article
T1 Domain wall dynamics in expanding spaces
A1 Cao García, Francisco Javier
A1 Zamora-Sillero, Elias
A1 Quintero, Niurka R.
AB We study the effects on the dynamics of kinks due to expansions and contractions of the space. We show that the propagation velocity of the kink can be adiabatically tuned through slow expansions and/or contractions, while its width is given as a function of the velocity. We also analyze the case of fast expansions and/or contractions, where we are no longer on the adiabatic regime. In this case the kink moves more slowly after an expansion-contraction cycle as a consequence of the loss of energy through radiation. All these effects are numerically studied in the nonlinear Klein-Gordon equations (both for the sine-Gordon and for the 𝜙4 potential), and they are also studied within the framework of the collective coordinate evolution equations for the width and the center of mass of the kink. These collective coordinate evolution equations are obtained with a procedure that allows us to consider even the case of large expansions and/or contractions.
PB American Physical Society
SN 2470-0045
YR 2006
FD 2006-05-12
LK https://hdl.handle.net/20.500.14352/104681
UL https://hdl.handle.net/20.500.14352/104681
LA eng
NO Cao, F. J., Zamora-Sillero, E., & Quintero, N. R. (2006). Domain wall dynamics in expanding spaces. Physical Review E, 73(5), 056603.
NO Ministerio de Ciencia y Tecnología (España)
NO Junta de Andalucía
NO Universidad de Sevilla
DS Docta Complutense
RD 19 abr 2025