Quantum Many-Body Physics in Open Systems: Measurement and Strong Correlations
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Beschreibung
This book studies the fundamental aspects of many-body physics in quantum systems open to an external world. Recent remarkable developments in the observation and manipulation of quantum matter at the single-quantum level point to a new research area of open many-body systems, where interactions with an external observer and the environment play a major role.
The first part of the book elucidates the influence of measurement backaction from an external observer, revealing new types of quantum critical phenomena and out-of-equilibrium dynamics beyond the conventional paradigm of closed systems. In turn, the second part develops a powerful theoretical approach to study the in- and out-of-equilibrium physics of an open quantum system strongly correlated with an external environment, where the entanglement between the system and the environment plays an essential role. The results obtained here offer essential theoretical results for understanding the many-body physicsof quantum systems open to an external world, and can be applied to experimental systems in atomic, molecular and optical physics, quantum information science and condensed matter physics.
This book studies the fundamental aspects of many-body physics in quantum systems open to an external world. Recent remarkable developments in the observation and manipulation of quantum matter at the single-quantum level point to a new research area of open many-body systems, where interactions with an external observer and the environment play a major role.
The first part of the book elucidates the influence of measurement backaction from an external observer, revealing new types of quantum critical phenomena and out-of-equilibrium dynamics beyond the conventional paradigm of closed systems. In turn, the second part develops a powerful theoretical approach to study the in- and out-of-equilibrium physics of an open quantum system strongly correlated with an external environment, where the entanglement between the system and the environment plays an essential role. The results obtained here offer essential theoretical results for understanding the many-body physicsof quantum systems open to an external world, and can be applied to experimental systems in atomic, molecular and optical physics, quantum information science and condensed matter physics.
Nominated as an outstanding Ph.D. thesis by the University of Tokyo, Japan Demonstrates the emergence of qualitatively new quantum many-body phenomena in nonunitary open and out-of-equilibrium systems Presents a versatile and efficient theoretical approach to solving fermionic and bosonic quantum impurity problems in and out of equilibrium Honored with the JSPS Ikushi Prize and the President’s Award from the University of Tokyo
Autor*in
Yuto Ashida
Themen in »Quantum Many-Body Physics in Open Systems: Measurement and Strong Correlations«
Open Quantum Many-Body Systems Quantum Trajectory Quantum Measurement Theory Non-Hermitian Systems Quantum Impurity Problems Ultracold Atoms Engineered Dissipation and Quantum Measurement Variational Wave Functions in Quantum Impurity Problems Fermionic and Bosonic Gaussian States