Transport in open spin chains: A Monte Carlo wave-function approach

Abstract

We investigate energy transport in several two-level atom or spin-1/2 models by a direct coupling to heat baths of different temperatures. The analysis is carried out on the basis of a recently derived quantum master equation which describes the nonequilibrium properties of internally weakly coupled systems appropriately. For the computation of the stationary state of the dynamical equations, we employ a Monte Carlo wave-function approach. The analysis directly indicates normal diffusive or ballistic transport in finite models and hints toward an extrapolation of the transport behavior of infinite models.

to be published in Physical Reviews B

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Cited by in corpus (8)

• Charge and spin transport in strongly correlated one-dimensional quantum systems driven far from equilibrium
• A real-time study of diffusive and ballistic transport in spin-1/2 chains using the adaptive time-dependent density matrix renormalization group method
• Density dynamics in translationally invariant spin-1/2 chains at high temperatures: a current auto-correlation approach to finite time- and length-scales
• Heat flux operator, current conservation and the formal Fourier's law
• Density dynamics from current auto-correlations at finite time- and length-scales
• Control of heat transport in quantum spin systems
• Equivalence of transport coefficients in bath-induced and dynamical scenarios
• A Lindblad model for a spin chain coupled to heat baths