A simple construction of the Anderson operator via its quadratic form in dimensions two and three
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Resumen en inglés
We provide a simple construction of the Anderson operator in dimensions two and three. This is done through its quadratic form. We rely on an exponential transform instead of the regularity structures or paracontrolled ...Leer más >
We provide a simple construction of the Anderson operator in dimensions two and three. This is done through its quadratic form. We rely on an exponential transform instead of the regularity structures or paracontrolled calculus which are usually used for the construction of the operator. The knowledge of the form is robust enough to deduce important properties such as positivity and irreducibility of the corresponding semigroup. The latter property gives existence of a spectral gap.< Leer menos
Palabras clave en inglés
Anderson form
singular stochastic operator
Schrödinger operator
renormalization
positivity
spectral gap
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