Lanczos method for the calculation of finite-temperature quantities in correlated systems
- 15 February 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 49 (7) , 5065-5068
- https://doi.org/10.1103/physrevb.49.5065
Abstract
A method, using the Lanczos diagonalizatioin technique and random sampling, is introduced to evaluate finite-temperature static and dynamical quantities in small many-body quantum systems. As an example the method is applied to the calculation of the optical conductivity of a single charge-carrier hole in the system of strongly correlated electrons, as described by the t-J model.Keywords
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