نتایج جستجو برای: exponential decay

تعداد نتایج: 133119  

Journal: :Discrete and Continuous Dynamical Systems 2013

Journal: :Mathematical Sciences and Applications E-Notes 2020

2006
J. Eisert

We investigate the relationship between the gap between the energy of the ground state and the first excited state and the decay of correlation functions in harmonic lattice systems. We prove that in gapped systems, the exponential decay of correlations follows for both the ground state and thermal states. Considering the converse direction, we show that an energy gap can follow from algebraic ...

1999
Michael Aizenman Jeffrey H. Schenker Roland M. Friedrich Dirk Hundertmark

For random Schrödinger operators, and a more general class of operators with random potentials of ‘regular’ probability distributions, we present a family of constructive criteria for the localization regime. A technically convenient characterization of localization is rapid decay of the Green function’s fractional moments. In addition to explicit bounds, the constructive criteria indicate that...

Journal: :Journal of Mathematical Analysis and Applications 1977

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