2026 IHES Summer School – Cosmological Correlators

Collection 2026 IHES Summer School – Cosmological Correlators

Organizer(s) Daniel Baumann, Daniel Green, Austin Joyce, Guilherme Pimentel

Date(s) 06/07/2026 - 17/07/2026

linked URL https://indico.math.cnrs.fr/event/15597/

00:00:00 / 00:00:00

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EFT of Open Systems : Density Matrices and the Operator Formalism (1/4)

By Enrico Pajer

The first lecture introduces the foundational concepts of open quantum systems in the operator language. Topics include: - Density matrices and the distinction between pure and mixed states, - Entanglement, coarse graining, and the origin of entropy in open systems, - Quantum master equations and effective non-unitary evolution, - The Lindblad equation and Markovian dynamics, - Completely positive and trace-preserving (CPTP) maps and their physical interpretation. The emphasis is on understanding how effective dissipative dynamics emerge when unobserved degrees of freedom are integrated out.

Information about the video

Date of recording 06/07/2026
Date of publication 06/07/2026
Institution IHES
Language English
Audience Researchers, Graduate Students
Format MP4

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EFT of Open Systems : Density Matrices and the Operator Formalism (1/4)

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