96 citations · 668 across the 25 of their papers we have counts for
25 papers
Open system probes of renormalization group flow
Andrew Keefe, Brenden Bowen, Saptarshi Biswas +3
Open system probes can provide an efficient means to characterize quantum many-body systems by employing them as engineered environments. The key idea is to map long-range spatial…
Open system dynamics in interacting quantum field theories
Brenden Bowen, Nishant Agarwal, Archana Kamal
A quantum system that interacts with an environment generally undergoes nonunitary evolution described by a non-Markovian or Markovian master equation. In this paper, we construct…
Thermalization and localization in a discretized quantum field theory
Spasen Chaykov, Brenden Bowen, Nishant Agarwal
Localization marks the breakdown of thermalization in subregions of quantum many-body systems in the presence of sufficiently large disorder. In this paper, we use numerical techni…
Initial value formulation of a quantum damped harmonic oscillator
Nishant Agarwal, Yi-Zen Chu
The in-in formalism and its influence functional generalization are widely used to describe the out-of-equilibrium dynamics of unitary and open quantum systems, respectively. In th…
Loop corrections in Minkowski spacetime away from equilibrium. Part II. Finite-time results
Spasen Chaykov, Nishant Agarwal, Sina Bahrami +1
Loop corrections to finite-time correlation functions in quantum field theories away from equilibrium can be calculated using the in-in path integral approach. In this paper, we ca…
Loop corrections in Minkowski spacetime away from equilibrium. Part I. Late-time resummations
Spasen Chaykov, Nishant Agarwal, Sina Bahrami +1
Loop corrections to unequal-time correlation functions in Minkowski spacetime exhibit secular growth due to a breakdown of time-dependent perturbation theory. This is analogous to…