From integrability to conductance, impurity systems
Castro-Alvaredo, O. & Fring, A. (2002). From integrability to conductance, impurity systems. Nuclear Physics B, 649(3), pp. 449-490. doi: 10.1016/S0550-3213(02)01029-5
Abstract
We compute the DC conductance with two different methods, which both exploit the integrability of the theories under consideration. On one hand we determine the conductance through a defect by means of the thermodynamic Bethe ansatz and standard relativistic potential scattering theory based on a Landauer transport theory picture. On the other hand, we propose a Kubo formula for a defect system and evaluate the current-current two-point correlation function it involves with the help of a form factor expansion. For a variety of defects in a fermionic system we find excellent agreement between the two different theoretical descriptions.
| Publication Type: | Article |
|---|---|
| Additional Information: | Published by Elsevier |
| Subjects: | Q Science > QA Mathematics |
| Departments: | School of Science & Technology > Mathematics |
Available under License Creative Commons Attribution.
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