Quantum Monte Carlo simulation for the conductance of one-dimensional quantum spin systems

Details Quantum Monte Carlo simulation for the conductance of one-dimensional quantum spin systems Quantum Monte Carlo simulation for the conductance of one-dimensional quantum spin systems

2003-09-16

arxiv.org/abs/cond-mat/0309376v2

Phys. Rev. B, Vol. 68, 184424 (2003)

Physics

Condensed Matter

8 pages, 9 figures

Scientific paper

10.1103/PhysRevB.68.184424

Recently, the stochastic series expansion (SSE) has been proposed as a powerful MC-method, which allows simulations at low $T$ for quantum-spin systems. We show that the SSE allows to compute the magnetic conductance for various one-dimensional spin systems without further approximations. We consider various modifications of the anisotropic Heisenberg chain. We recover the Kane-Fisher scaling for one impurity in a Luttinger-liquid and study the influence of non-interacting leads for the conductance of an interacting system.

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