Defect generation in a spin-1/2 transverse XY chain under repeated quenching of the transverse field

Victor Mukherjee, Amit Dutta, Diptiman Sen

We study the quenching dynamics of a one-dimensional spin-1/2 $XY$ model in a transverse field when the transverse field $h(=t/\tau )$ is quenched repeatedly between $-\infty$ and $+\i…