No enhancement of the localization length for two interacting particles in a random potential
We study two interacting particles in a random potential chain by means of the transfer matrix method. The dependence of the two-particle localization length lampta_2 on disorder and interaction strength is investigated. Our results demonstrate that the recently proposed enhancement of lampta_2 as c...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Others |
| Language: | English |
| Published: |
Universitätsbibliothek Chemnitz
1998
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| Subjects: | |
| Online Access: | http://nbn-resolving.de/urn:nbn:de:bsz:ch1-199801117 http://nbn-resolving.de/urn:nbn:de:bsz:ch1-199801117 http://www.qucosa.de/fileadmin/data/qucosa/documents/4190/data/b020.pdf http://www.qucosa.de/fileadmin/data/qucosa/documents/4190/data/b020.ps http://www.qucosa.de/fileadmin/data/qucosa/documents/4190/19980111.txt |
| Summary: | We study two interacting particles in a random potential chain by means of the transfer matrix
method. The dependence of the two-particle localization length lampta_2 on disorder and interaction
strength is investigated. Our results demonstrate that the recently proposed enhancement of lampta_2 as
compared to the results for single particles is entirely due to the finite size of the systems considered.
This is shown for a Hubbard-like onsite interaction and also a long-range interaction. |
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