- Published 2008

We consider a massless scalar Bose field interacting with two particles, one of them infinitely heavy. Neither an infrared nor an ultraviolet cutoff is imposed. In case the charge of the particles is of the same sign and sufficiently small, we prove the existence of a ground state.

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@inproceedings{Hirokawa2008GroundSF,
title={Ground State for Point Particles Interacting Through a Massless Scalar Bose Field},
author={Masao Hirokawa and Fumio Hiroshima and Herbert Spohn and Hiroshi Ezawa and Elliott H. Lieb and Edward J. Nelson},
year={2008}
}