Dynamical simulation of current fluctuations in a dissipative two-state system
J. Stockburger, C.H. Mak (University of Southern California)
TL;DR
This paper introduces a new quantum dynamics simulation method to study current fluctuations in a dissipative two-state system, revealing insights into the transition from coherent to incoherent tunneling at low temperatures.
Contribution
A novel deterministic real-time path integral method for simulating quantum tunneling dynamics in dissipative systems.
Findings
Identified the transition from coherent to incoherent dynamics at low temperatures.
Demonstrated the effectiveness of the new simulation approach.
Provided detailed analysis of current fluctuations in the system.
Abstract
Current fluctuations in a dissipative two-state system have been studied using a novel quantum dynamics simulation method. After a transformation of the path integrals, the tunneling dynamics is computed by deterministic integration over the real-time paths under the influence of colored noise. The nature of the transition from coherent to incoherent dynamics at low temperatures is re-examined.
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