Decoherence of an impurity in a one-dimensional fermionic bath with mass imbalance

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Visuri, A. M. Kinnunen, J. J. Baarsma, J. E. Törmä, Päivi 2016-10-13T06:15:46Z 2016-07-28
dc.identifier.citation Visuri , A M , Kinnunen , J J , Baarsma , J E & Törmä , P 2016 , ' Decoherence of an impurity in a one-dimensional fermionic bath with mass imbalance ' PHYSICAL REVIEW A , vol 94 , no. 1 , 013619 , pp. 1-11 . DOI: 10.1103/PhysRevA.94.013619 en
dc.identifier.issn 1050-2947
dc.identifier.issn 1094-1622
dc.identifier.other PURE UUID: d131d8e5-dd39-4248-8585-086e4b40fb0f
dc.identifier.other PURE ITEMURL:
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dc.description.abstract We study the transport, decoherence, and the dissipation of the kinetic energy of a mobile impurity interacting with a bath of free fermions in a one-dimensional lattice. Numerical simulations are made with the time-evolving block decimation method, starting from a state where the impurity and bath are decoupled. We introduce a mass imbalance between the impurity and bath particles and find that the fastest decoherence occurs for a light impurity in a bath of heavy particles. By contrast, the fastest dissipation of energy occurs when the masses are equal. We present a simple model for decoherence in the heavy bath limit, and a linear density response description of the interaction which predicts maximum dissipation for equal masses. en
dc.format.extent 1-11
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation info:eu-repo/grantAgreement/EC/FP7/340748/EU//CODE
dc.relation.ispartofseries PHYSICAL REVIEW A en
dc.relation.ispartofseries Volume 94, issue 1 en
dc.rights openAccess en
dc.subject.other Atomic and Molecular Physics, and Optics en
dc.subject.other 114 Physical sciences en
dc.title Decoherence of an impurity in a one-dimensional fermionic bath with mass imbalance en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Applied Physics
dc.subject.keyword Atomic and Molecular Physics, and Optics
dc.subject.keyword 114 Physical sciences
dc.identifier.urn URN:NBN:fi:aalto-201610135053
dc.identifier.doi 10.1103/PhysRevA.94.013619
dc.type.version publishedVersion

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