On ground state of some non local Schrödinger operators
We study a ground state of some non-local Schrödinger operator associated with an evolution equation for the density of population in the stochastic contact model in continuum with inhomogeneous mortality rates. We found a new effect in this model, when even in the high-dimensional case the existence of a small positive perturbation of a special form (so-called, small paradise) implies the appearance of the ground state. We consider the problem in the Banach space of bounded continuous functions (Formula presented.) and in the Hilbert space (Formula presented.). © 2016 Informa UK Limited, trading as Taylor & Francis Group.