Lieb-Robinson Bounds for Multi-Commutators and Applications to Response Theory

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Springer, Nov 30, 2016 - Science - 109 pages
Lieb-Robinson bounds for multi-commutators are effective mathematical tools to handle analytic aspects of infinite volume dynamics of non-relativistic quantum particles with short-range, possibly time-dependent interactions.In particular, the existence of fundamental solutions is shown for those (non-autonomous) C*-dynamical systems for which the usual conditions found in standard theories of (parabolic or hyperbolic) non-autonomous evolution equations are not given. In mathematical physics, bounds on multi-commutators of an order higher than two can be used to study linear and non-linear responses of interacting particles to external perturbations. These bounds are derived for lattice fermions, in view of applications to microscopic quantum theory of electrical conduction discussed in this book. All results also apply to quantum spin systems, with obvious modifications. In order to make the results accessible to a wide audience, in particular to students in mathematics with little Physics background, basics of Quantum Mechanics are presented, keeping in mind its algebraic formulation. The C*-algebraic setting for lattice fermions, as well as the celebrated Lieb-Robinson bounds for commutators, are explained in detail, for completeness.
 

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Contents

1 Introduction
1
2 Algebraic Quantum Mechanics
5
4 LiebRobinson Bounds for Multicommutators
31
5 LiebRobinson Bounds for Nonautonomous Dynamics
63
6 Applications to Conductivity Measures
89
References
103
Index
107
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