24 citations · 25 across the 3 of their papers we have counts for
7 papers
Lattice-fermionic Casimir effect and topological insulators
Tsutomu Ishikawa, Katsumasa Nakayama, Kei Suzuki
The Casimir effect arises from the zero-point energy of particles in momentum space deformed by the existence of two parallel plates. For degrees of freedom on the lattice, its ene…
Casimir effect for lattice fermions
Tsutomu Ishikawa, Katsumasa Nakayama, Kei Suzuki
We propose a definition of the Casimir energy for free lattice fermions. From this definition, we study the Casimir effects for the massless or massive naive fermion, Wilson fermio…
Reconstruction of smeared spectral function from Euclidean correlation functions
Gabriela Bailas, Shoji Hashimoto, Tsutomu Ishikawa
We propose a method to reconstruct smeared spectral functions from two-point correlation functions measured on the Euclidean lattice. Arbitrary smearing function can be considered…
Charmonium contribution to $B \rightarrow K\ell^+\ell^-: testing the factorization approximation on the lattice
Katsumasa Nakayama, Tsutomu Ishikawa, Shoji Hashimoto
We report the current status of a study of charmonium contribution to on the lattice. Our lattice calculation tests the factorization approximation fo…
Renormalization of bilinear and four-fermion operators through temporal moments
Tsutomu Ishikawa, Katsumasa Nakayama, Shoji Hashimoto
We propose a renormalization scheme that can be simply implemented on the lattice. It consists of the temporal moments of two-point and three-point functions calculated with finite…
mesons as a probe of Casimir effect for chiral symmetry breaking
Tsutomu Ishikawa, Katsumasa Nakayama, Daiki Suenaga +1
We propose mesons as probes to investigate finite-volume effects for chiral symmetry breaking at zero and finite temperature. By using the -flavor linear-sigma model with…