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math-ph2020★ 2 cited
Extended State Space for describing renormalized Fock spaces in QFT
Sascha Lill
We revisit the non-perturbative renormalization of a class of simple polaron models with resting fermions. The considered dispersion relations and form factors are allowed to be hi…
math-ph2020★ 7 cited
Consistency Proof for Multi-Time Schrodinger Equations with Particle Creation and Ultraviolet Cut-Off
Sascha Lill, Lukas Nickel, Roderich Tumulka
For multi-time wave functions, which naturally arise as the relativistic particle-position representation of the quantum state vector, the analog of the Schrödinger equation consis…