On Existence of Ground States in the Spin Boson Model

Autor: David Hasler, Benjamin Hinrichs, Oliver Siebert
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Popis: We show the existence of ground states in the massless spin boson model without any infrared regularization. Our proof is non-perturbative and relies on a compactness argument. It works for arbitrary values of the coupling constant under the hypothesis that the second derivative of the ground state energy as a function of a constant external magnetic field is bounded.
14 pages
Databáze: OpenAIRE