Density Resolved Wave Packet Spreading in Disordered Gross-Pitaevskii Lattices
Statistical Mechanics
2020-12-15 v3 Chaotic Dynamics
Computational Physics
Abstract
We perform novel energy and norm density resolved wave packet spreading studies in the disordered Gross-Pitaevskii (GP) lattice to confine energy density fluctuations. We map the locations of GP regimes of weak and strong chaos subdiffusive spreading in the 2D density control parameter space and observe strong chaos spreading over several decades. We obtain a renormalization of the ground state due to disorder, which allows for a new disorder-induced phase of disconnected insulating puddles of matter due to Lifshits tails. Inside this Lifshits phase, the wave packet spreading is substantially slowed down.
Keywords
Cite
@article{arxiv.2006.06286,
title = {Density Resolved Wave Packet Spreading in Disordered Gross-Pitaevskii Lattices},
author = {Yagmur Kati and Xiaoquan Yu and Sergej Flach},
journal= {arXiv preprint arXiv:2006.06286},
year = {2020}
}
Comments
12 pages, 5 figures. Submission to SciPost