Mainz 2026 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 57: Open Quantum Systems III
Q 57.7: Talk
Thursday, March 5, 2026, 16:00–16:15, P 4
Recursive perturbation approach to time-convolutionless master equations: Explicit construction of generalized Lindblad generators for arbitrary open systems — •Alessandra Colla1,2,3, Heinz Peter Breuer3,4, and Giulio Gasbarri5,6 — 1Dipartimento di Fisica Aldo Pontremoli, Università degli Studi di Milano, Via Celoria 16, I-20133 Milan, ItalyDipartimento di Fisica *Aldo Pontremoli*, Università degli Studi di Milano, Via Celoria 16, I-20133 Milan, Italy — 2INFN, Sezione di Milano, Via Celoria 16, I-20133 Milan, Italy — 3Institute of Physics, University of Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany — 4EUCOR Centre for Quantum Science and Quantum Computing,University of Freiburg, Hermann-Herder-Straße 3, D-79104 Freiburg, Germany — 5Naturwissenschaftlich-Technische Fakultät, Universität Siegen, Siegen 57068, Germany — 6Física Teòrica: Informació i Fenòmens Quàntics, Department de Física, Universitat Autònoma de Barcelona, 08193 Bellaterra (Barcelona), Spain
We present a recursive perturbative expansion for the time-convolutionless (TCL) generator of an open quantum system that preserves a generalized Lindblad-like structure at every order, assuming only an initially uncorrelated system*environment state. The generator is cast in a canonical, minimal-dissipation form that uniquely splits coherent (Hamiltonian) and dissipative contributions