Numerical Computation of Dynamically Important Excited States of Many-Body Systems
Quantum Gases
2013-05-30 v2 Atomic Physics
Quantum Physics
Abstract
We present an extension of the time-dependent Density Matrix Renormalization Group (t-DMRG), also known as Time Evolving Block Decimation algorithm (TEBD), allowing for the computation of dynamically important excited states of one-dimensional many-body systems. We show its practical use for analyzing the dynamical properties and excitations of the Bose-Hubbard model describing ultracold atoms loaded in an optical lattice from a Bose-Einstein condensate. This allows for a deeper understanding of nonadiabaticity in experimental realizations of insulating phases.
Keywords
Cite
@article{arxiv.1106.4906,
title = {Numerical Computation of Dynamically Important Excited States of Many-Body Systems},
author = {Mateusz Lacki and Dominique Delande and Jakub Zakrzewski},
journal= {arXiv preprint arXiv:1106.4906},
year = {2013}
}
Comments
Expanded version (12pp. 13 figures)