6 citations · 6 across the 4 of their papers we have counts for
4 papers
Nonperturbative Resummation of Divergent Time-Local Generators: Disentangling Non-Markovian Dynamics
Dragomir Davidovic
Perturbative van Kampen cumulant expansions of time-local generators of open quantum systems generically diverge at long times, but the reduced dynamics is regular. We show that th…
Regulated reconstruction of long-time spin--boson dynamics and emergent zero-bias transverse measurement primitive
Dragomir Davidovic
Time--convolutionless (TCL) master equations can break down at long times: time-local perturbative generators develop secular growth in correlation-dominated regimes. We mitigate t…
Benchmarking TCL4: Assessing the Usability and Reliability of Fourth-Order Approximations
Jiahao Chen, Elyana Crowder, Lian Xiang +1
The non-Markovian dynamics of an open quantum system can be rigorously derived using the Feynman-Vernon influence functional approach. Although this formalism is exact, practical n…
Sixth-order time-convolutionless master equation and beyond: Late-time resummations, two types of divergences, and the limits of validity
Lance Lampert, Srikar Gadamsetty, Shantanu Chaudhary +4
Perturbative master equations are essential for modeling open quantum systems but often exhibit late-time divergences when environmental correlations decay algebraically. In this w…