Nguyen, H; Ng, N; Lindoy, L; Park, G; Millis, A J; Chan, G K L; Reichman, D R (2024) Correlation Functions From Tensor Network Influence Functionals: The Case of the Spin-Boson Model. The Journal of Chemical Physics, 161 (10). 104111

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Abstract

We investigate the application of matrix product state (MPS) representations of the influence functional (IF) for the calculation of real-time equilibrium correlation functions in open quantum systems. Focusing specifically on the unbiased spin-boson model, we examine the use of MPS-IFs for complex time propagation, as well as MPS-IFs for constructing correlation functions in the steady state. We argue that steady state approaches are preferable in most cases except ones where the correlation function can be expected to decay algebraically in time.

Item Type:	Article
Subjects:	Mathematics and Scientific Computing > Numerical Computation
Divisions:	Quantum Technologies
Identification number/DOI:	10.1063/5.0224880
Last Modified:	23 Oct 2024 14:09
URI:	https://eprintspublications.npl.co.uk/id/eprint/10086