A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2013; you can also visit the original URL.
The file type is `application/pdf`

.

##
###
Gradient critical phenomena in the Ising quantum chain

2007
*
Journal of Physics A: Mathematical and Theoretical
*

We consider the behaviour of a critical system in the presence of a gradient perturbation of the couplings. In the direction of the gradient an interface region separates the ordered phase from the disordered one. We develop a scaling theory for the density profiles induced by the gradient perturbation which involves a characteristic length given by the width of the interface region. The scaling predictions are tested in the framework of the mean-field Ginzburg-Landau theory. Then we consider

doi:10.1088/1751-8113/40/7/004
fatcat:qlz3wqp2xjg4lpemx4mejorahe