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"Light-cone" dynamics after quantum quenches in spin chains release_rev_c4ccb860-3104-4be2-8809-1fd5169edef4

by Lars Bonnes, Fabian H. L. Essler, Andreas M. Läuchli

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abstracts [{'sha1': 'ee0eefbad43c5168c460845355861e4ccedb18ba', 'content': 'Signal propagation in the non equilibirum evolution after quantum quenches\nhas recently attracted much experimental and theoretical interest. A key\nquestion arising in this context is what principles, and which of the\nproperties of the quench, determine the characteristic propagation velocity.\nHere we investigate such issues for a class of quench protocols in one of the\ncentral paradigms of interacting many-particle quantum systems, the spin-1/2\nHeisenberg XXZ chain. We consider quenches from a variety of initial thermal\ndensity matrices to the same final Hamiltonian using matrix product state\nmethods. The spreading velocities are observed to vary substantially with the\ninitial density matrix. However, we achieve a striking data collapse when the\nspreading velocity is considered to be a function of the excess energy. Using\nthe fact that the XXZ chain is integrable, we present an explanation of the\nobserved velocities in terms of "excitations" in an appropriately defined\ngeneralized Gibbs ensemble.', 'mimetype': 'text/plain', 'lang': 'en'}]
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contribs [{'index': 0, 'creator_id': None, 'creator': None, 'raw_name': 'Lars Bonnes', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}, {'index': 1, 'creator_id': None, 'creator': None, 'raw_name': 'Fabian H. L. Essler', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}, {'index': 2, 'creator_id': None, 'creator': None, 'raw_name': 'Andreas M. Läuchli', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}]
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ext_ids {'doi': None, 'wikidata_qid': None, 'isbn13': None, 'pmid': None, 'pmcid': None, 'core': None, 'arxiv': '1404.4062v1', 'jstor': None, 'ark': None, 'mag': None, 'doaj': None, 'dblp': None, 'oai': None, 'hdl': None}
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language en
license_slug ARXIV-1.0
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release_date 2014-04-15
release_stage submitted
release_type article
release_year 2014
revision c4ccb860-3104-4be2-8809-1fd5169edef4
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title "Light-cone" dynamics after quantum quenches in spin chains
version v1
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work_id bilzwrgg4vdf7cqwgwnijgwawe
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arxiv.base_id 1404.4062
arxiv.categories ['cond-mat.str-el']
arxiv.comments 4+pages, 5 figures, supplementary material
arxiv.journal_ref Phys. Rev. Lett. 113, 187203 (2014)
superceded True