- Abstract:
-
We employ dynamical density-matrix renormalization group (DDMRG) and field-theory methods to determine the frequency-dependent optical conductivity in one-dimensional extended, half-filled Hubbard models. The field-theory approach is applicable to the regime of `small' Mott gaps which is the most difficult to access by DDMRG. For very large Mott gaps the DDMRG recovers analytical results obtained previously by means of strong-coupling techniques. We focus on exciton formation at energies belo...
Expand abstract - Publication status:
- Published
- Publisher copy:
- 10.1103/PhysRevB.64.125119
-
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- Journal:
- Phys. Rev. B
- Volume:
- 64
- Issue:
- 12
- Pages:
- 125119
- Publication date:
- 2001-03-20
- DOI:
- EISSN:
-
1095-3795
- ISSN:
-
1098-0121
- URN:
-
uuid:e375d1fd-d3d1-4757-bb60-864068f737c9
- Source identifiers:
-
199347
- Local pid:
- pubs:199347
- Language:
- English
- Keywords:
- Copyright date:
- 2001
- Notes:
-
15 pages, 6 eps figures, corrected typos in labels of figures 4,5,
and 6
Journal article
Excitons in one-dimensional Mott insulators
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