9 citations · 19 across the 3 of their papers we have counts for
4 papers
Absence of Ground States in the Renormalized Massless Translation-Invariant Nelson Model
Thomas Norman Dam, Benjamin Hinrichs
We consider a model for a massive uncharged non-relativistic particle interacting with a massless bosonic field, widely referred to as the Nelson model. It is well known, that an u…
Non-existence of ground states in the translation invariant Nelson model
Thomas Norman Dam
In this paper we consider the massless translation invariant Nelson model with ultraviolet cutoff. It is proven that the fiber operators have no ground state if there is no infrare…
Asymptotics in Spin-Boson type models
Thomas Norman Dam, Jacob Schach Møller
In this paper we investigate a family of models for a qubit interacting with a bosonic field. More precisely, we find asymptotic limits of the Hamiltonian as the strength of the in…
Spin-Boson type models analysed using symmetries
Thomas Norman Dam, Jacob Schach Møller
In this paper we analyse a family of models for a qubit interacting with a bosonic field. These models have a parity symmetry, which enables them to have a ground state even in som…