86 citations · 87 across the 3 of their papers we have counts for
4 papers
Functional Renormalization Group Flows and Gauge Consistency in QED
Yoshio Echigo, Yuji Igarashi, Katsumi Itoh +2
We consider quantum electrodynamics with chiral four-Fermi interactions in the functional renormalization group approach. In gauge theories, the functional flow equation for the ef…
Singular flat bands in three dimensions: Landau level spreading, quantum geometry, and Weyl reconstruction
Takuto Kawakami, Yuji Igarashi, Mikito Koshino
We theoretically investigate three-dimensional singular flat band systems, focusing on their quantum geometric properties and response to external magnetic fields. As a representat…
Realization of symmetry in the ERG approach to quantum field theory
Yuji Igarashi, Katsumi Itoh, Hidenori Sonoda
We review the use of the exact renormalization group for realization of symmetry in renormalizable field theories. The review consists of three parts. In part I (sects. 2,3,4), we…
On Majorana fermions on the lattice
Jan M. Pawlowski, Yuji Igarashi
The construction of massless Majorana fermions with chiral Yukawa couplings on the lattice is considered. We find topological obstructions tightly linked to those underlying the Ni…