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Optical conductivity of the half-filled hubbard chain

Abstract:

We combine well-controlled analytical and numerical methods to determine the optical conductivity of the one-dimensional Mott-Hubbard insulator at zero temperature. A dynamical density-matrix renormalization group method provides the entire absorption spectrum for all but very small coupling strengths. In this limit we calculate the conductivity analytically using exact field-theoretical methods. Above the Lieb-Wu gap the conductivity exhibits a characteristic square-root increase. For small ...

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Publication status:
Published

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Publisher copy:
10.1103/physrevlett.85.3910

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Theoretical Physics
Role:
Author
Publisher:
American Inst of Physics Publisher's website
Journal:
Physical review letters
Volume:
85
Issue:
18
Pages:
3910-3913
Publication date:
2000-10-05
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
URN:
uuid:e0d6aa90-4d8e-42db-9b54-7362f6057ce4
Source identifiers:
14078
Local pid:
pubs:14078
Language:
English
Keywords:

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