Regensburg 2004 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 26: Korrelierte Elektronen: Theorie II

TT 26.2: Vortrag

Donnerstag, 11. März 2004, 09:45–10:00, H18

Phase diagram of the one-dimensional t−J model — •Jochen Hub, Catia Lavalle, and Alejandro Muramatsu — Universität Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart

Using a recently developed hybrid-loop algorithm [1] we determine the phase diagram of the t−J model in one-dimension, where a Luttinger-liquid phase (with K_ρ<1 and K_ρ>1), a spin-gap phase and a region of phase-separation are determined on the basis of a detailed finite-size scaling.
[1] C. Lavalle, M. Arikawa, S. Capponi, F. F. Assaad and M. Muramatsu Phys. Rev. Lett. 90, 216401 (2003)