TY - JOUR
AB - 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.
AU - Hasler, David
AU - Hinrichs, Benjamin
AU - Siebert, Oliver
ID - 43465
IS - 1
JF - Communications in Mathematical Physics
SN - 0010-3616
TI - On Existence of Ground States in the Spin Boson Model
VL - 388
ER -