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math-ph2022★ 8 cited
On the global minimum of the energy-momentum relation for the polaron
Jonas Lampart, David Mitrouskas, Krzysztof Myśliwy
For the Fröhlich model of the large polaron, we prove that the ground state energy as a function of the total momentum has a unique global minimum at momentum zero. This implies th…
math-ph2022★ 3 cited
Hamiltonians for polaron models with subcritical ultraviolet singularities
Jonas Lampart
We treat the ultraviolet problem for polaron-type models in nonrelativistic quantum field theory. Assuming that the dispersion relations of particles and the field have the same gr…