2 papers
quant-ph2025
Optimal observables for (non-)equilibrium quantum metrology from the master equation
VÃctor López-Pardo, Alexander Rothkopf
We demonstrate how observables with optimal sensitivity to environmental properties can be constructed explicitly from the master equation of an open-quantum system. Our approach d…
hep-lat2025
Real time simulations of scalar fields with kernelled complex Langevin equation
Daniel Alvestad, Alexander Rothkopf, Dénes Sexty
Real time evolution of a scalar field theory is investigated. The severe sign problem is circumvented using the Complex Langevin equation. The naive application of the method break…