Entanglement growth in a weakly interacting Bose gas

Authors :: Giorgi, G. L.
DE PASQUALE, Ferdinando
Source :: Physical review. A 78 (2008)., info:cnr-pdr/source/autori:Giorgi, GL; de Pasquale, F/titolo:Entanglement growth in a weakly interacting Bose gas/doi:/rivista:Physical review. A/anno:2008/pagina_da:/pagina_a:/intervallo_pagine:/volume:78
Publication Year :: 2008
Publisher :: Published by the American Physical Society through the American Institute of Physics, New York, N.Y. , Stati Uniti d'America, 2008.
Abstract: The early stage of entanglement growth in a Bose system on a lattice is studied by means of analytical methods. A local unitary transformation is established which allows us to introduce Bose-Einstein condensation and the related weak-coupling approximation. We calculate both the entanglement of each lattice site with all other sites and the entanglement between pairs of sites. The first quantity weakly depends on the system size, while the second one exhibits peculiar oscillations within the time range of validity of our approximation.

Subjects :: Condensed Matter::Quantum Gases
SUPERFLUID
INSULATOR
CONTINUOUS VARIABLE SYSTEMS
SEPARABILITY CRITERION
PHASE-TRANSITIONS

Database :: OpenAIRE
Journal :: Physical review. A 78 (2008)., info:cnr-pdr/source/autori:Giorgi, GL; de Pasquale, F/titolo:Entanglement growth in a weakly interacting Bose gas/doi:/rivista:Physical review. A/anno:2008/pagina_da:/pagina_a:/intervallo_pagine:/volume:78
Accession number :: edsair.dedup.wf.001..f6ea9477e5308cb49c0f810ee535b12a

Tools