Systematic coarse-graining of environments for the non-perturbative simulation of open quantum systems

• URL: http://arxiv.org/abs/2303.08982v3
• Date: Tue, 13 Feb 2024 19:38:29 GMT
• Title: Systematic coarse-graining of environments for the non-perturbative simulation of open quantum systems
• Authors: Nicola Lorenzoni, Namgee Cho, James Lim, Dario Tamascelli, Susana F. Huelga, Martin B. Plenio
• Abstract summary: We introduce a technique for the construction of effective phonon spectral densities that capture accurately open system dynamics over a finite time interval of interest. When combined with existing non-perturbative simulation tools, our approach can reduce significantly the computational costs associated with many-body open system dynamics.
• Score: 0.6990493129893112
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Conducting precise electronic-vibrational dynamics simulations of molecular systems poses significant challenges when dealing with realistic environments composed of numerous vibrational modes. Here, we introduce a technique for the construction of effective phonon spectral densities that capture accurately open system dynamics over a finite time interval of interest. When combined with existing non-perturbative simulation tools, our approach can reduce significantly the computational costs associated with many-body open system dynamics.

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