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TT: Tiefe Temperaturen

TT 12: Correlated Electrons: Low-dimensional Systems - Models

TT 12.6: Talk

Tuesday, March 28, 2006, 10:45–11:00, HSZ 304

Quantum Monte Carlo studies of the one-dimensional t-J-model at finite temperature — •Stefan Harrer, Catia Lavalle, and Alejandro Muramatsu — Institut für Theoretische Physik III, Universität Stuttgart, D-70550 Stuttgart, Germany

We developed a quantum Monte Carlo algorithm to simulate the one dimensional t-J-model at finite temperature. It is an extension of the previously developed zero-temperature hybrid-loop-algorithm [1]. As in the zero temperature case, the algorithm is a combination of the determinantal and the loop algorithm, however, simulations are performed in the grand canonical ensemble. Both equal-time as well as time displaced correlation functions can be obtained.

[1] [t]12.5cm C. Lavalle, M. Arikawa, S. Capponi, F.F. Assaad, and A. Muramatsu, Phys. Rev. Lett. 90, 216401 (2003).