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math-ph2020
Contac interactions, Gamma convergence in Electrodynamics and the (Nelson) Polaron
Gianfausto Dell'Antonio
The Polaron is the quantum of a "Polarization" field originated by the "contact" interaction [D1][D2] of a massive polarizable particle with a photon. We prove that this process pr…
math-ph2020
Contact interactions in Q.M. Gamma convergence and Bose-Einstein condensation
Gianfausto Dell'Antonio
We describe \emph{zero range} (contact) interactions, weak and strong. Strong contact leads to the Efimov effect in Low Energy Nuclear Physics, weak contact leads to Bose-Einstein…