Absence of superdiffusion in the quasiperiodic spin chain at weak integrability breaking
arXiv:2012.07488 · doi:10.1103/PhysRevB.103.237101
Abstract
There has been interest in the spin transport properties of the Aubry-Andre-Harper model at high temperatures under weak integrability breaking, in particular for small interactions or small fields. We present old unpublished and new results that show that the model is diffusive, meaning that the claimed superdiffusion [1,2] is a finite-size effect.
References in corpus (4)
- Weak integrability breaking: chaos with integrability signature in coherent diffusion
- Phenomenology of anomalous transport in disordered one-dimensional systems
- Non-equilibrium steady state phases of the interacting Aubry-Andre-Harper model
- Ballistic-to-diffusive transition in spin chains with broken integrability