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Ergodicity Breaking in Quantum Many-Body Systems

International Centre for Theoretical Sciences via YouTube

Overview

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This course explores ergodicity breaking in quantum many-body systems, focusing on two mechanisms: many-body localisation and the competition between quantum dynamics and measurements. The learning outcomes include understanding the conditions for non-ergodic behavior, the nature of phase transitions, and the dynamics of quantum entanglement. The course teaches theoretical approaches from the perspective of many-body Hilbert/Fock spaces and includes topics such as thermalization, quantum phase transitions, and numerical studies. The teaching method involves lectures and discussions. This course is intended for individuals interested in quantum mechanics, statistical mechanics, and theoretical physics.

Syllabus

Introduction
Outline
Isolated systems
Local thermal equilibrium
Eigenstate expectations
What can break ergodicity
Thermalization in classical systems
Relative Scales
Isolated Quantum Systems
Purity of the State
Eulers Formula
Boundary terms
Onsite terms
Anderson localized systems
Questions
Problems
Quantum phase transition
Numerical studies
Phenomenology
Example

Taught by

International Centre for Theoretical Sciences

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