Speaker
Stanislaw Glazek
(University of Warsaw)
Description
An exact computation of effective Hamiltonians in an elementary model akin to quantum field theory is carried out by solving equations of the renormalization group procedure for effective particles (RGPEP) [1]. The computation exhibits the mechanism by which the weak-coupling expansion and Tamm-Dancoff approximation increase in accuracy along the RGPEP evolution. The model computational pattern can be followed in perturbative computations of effective Hamiltonians in realistic theories.
[1] S. D. Glazek, Phys. Rev. D 103, 014021 (2021).
Author
Stanislaw Glazek
(University of Warsaw)
