21 citations · 29 across the 11 of their papers we have counts for
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hep-th2009★ 1 cited
Apparently noninvariant terms of nonlinear sigma model in the one-loop approximation
Koji Harada, Hirofumi Kubo, Yuki Yamamoto
We show how the Apparently Noninvariant Terms (ANTs), which emerge in perturbation theory of nonlinear sigma models, are consistent with the nonlinearly realized symmetry by employ…
hep-th2009★ 4 cited
Apparently non-invariant terms of nonlinear sigma models in lattice perturbation theory
Koji Harada, Nozomu Hattori, Hirofumi Kubo +1
Apparently non-invariant terms (ANTs) which appear in loop diagrams for nonlinear sigma models (NLSs) are revisited in lattice perturbation theory. The calculations have been done…
hep-th2000
A Construction of an Effective Hamiltonian from Feynman Diagrams: Application to the Light-Front Yukawa Model
Yuki Yamamoto
We study a similarity transformation to construct an effective Hamiltonian systematically, which does not contain particle-number-changing interactions, by means of Fukuda-Sawada-T…