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Mobile impurity approach to the optical conductivity in the Hubbard chain

Abstract:

We consider the optical conductivity in the one dimensional Hubbard model in the metallic phase close to half filling. In this regime most of the spectral weight is located at frequencies above an energy scale Eopt that tends towards the optical gap in the Mott insulating phase for vanishing doping. Using the Bethe Ansatz we relate Eopt to thresholds of particular kinds of excitations in the Hubbard model. We then employ a mobile impurity models to analyze the optical conductivity for frequen...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted Manuscript

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Publisher copy:
10.1103/PhysRevB.93.205101

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Theoretical Physics
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Theoretical Physics
Publisher:
American Physical Society Publisher's website
Journal:
Physical Review B Journal website
Volume:
93
Issue:
20
Pages:
Article: 205101
Publication date:
2016
DOI:
EISSN:
2469-9969
ISSN:
2469-9950
URN:
uuid:82d6ba3d-2c23-4d9e-a3df-3bf53665d626
Source identifiers:
616923
Local pid:
pubs:616923

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