160 citations · 991 across the 54 of their papers we have counts for
51 papers · 1 filter
Exact SL(2,Z)-Structure of Lattice Maxwell Theory with -term in Modified Villain Formulation
Shoto Aoki, Yoshio Kikukawa, Toshinari Takemoto
We study the duality of lattice Maxwell theory in the modified Villain formulation, employing an ultra-local action with a theta term. Although this action is known to become non u…
On the infinite gradient-flow for the domain-wall formulation of chiral lattice gauge theories
Taichi Ago, Yoshio Kikukawa
We examine the proposal by Grabowska and Kaplan (GK) to use the infinite gradient flow in the domain-wall formulation of chiral lattice gauge theories. We consider the case of Abel…
Performance of Complex Langevin Simulation in 0+1 dimensional massive Thirring model at finite density
Hirotsugu Fujii, Syo Kamata, Yoshio Kikukawa
Statistical sampling with the complex Langevin (CL) equation is applied to (0+1)-dimensional Thirring model, and its uniform-field variant, at finite fermion chemical potential …
On the gauge invariant path-integral measure for the overlap Weyl fermions in of SO(10)
Yoshio Kikukawa
We consider the lattice formulation of SO(10) chiral gauge theory with left-handed Weyl fermions in the sixteen dimensional spinor representation () within the fram…
Why is the mission impossible? -- Decoupling the mirror Ginsparg-Wilson fermions in the lattice models for two-dimensional abelian chiral gauge theories
Yoshio Kikukawa
In the mirror fermion approach with Ginsparg-Wilson fermions, it has been argued that the mirror fermions do not decouple: in the 345 model with Dirac- and Majorana-Yukawa coupling…
Application of the Lefschetz thimble formulation to the (0+1) dim. Thirring model at finite density
Hirotsugu Fujii, Syo Kamata, Yoshio Kikukawa
Based on the Lefschetz thimble formulation of path-integration, we analyze the (0+1) dimensional Thirring model at finite chemical potentials and perform hybrid Monte Carlo (HMC) s…
Lefschetz thimble structure in one-dimensional lattice Thirring model at finite density
H. Fujii, S. Kamata, Y. Kikukawa
We investigate Lefschetz thimble structure of the complexified path-integration in the one-dimensional lattice massive Thirring model with finite chemical potential. The lattice mo…
Monte Carlo study of Lefschetz thimble structure in one-dimensional Thirring model at finite density
Hirotsugu Fujii, Syo Kamata, Yoshio Kikukawa
We consider the one-dimensional massive Thirring model formulated on the lattice with staggered fermions and an auxiliary compact vector (link) field, which is exactly solvable and…
Lattice simulation of SU(2) gauge theory with chirally symmetric fermions
Hideo Matsufuru, Yoshio Kikukawa, Kei-ichi Nagai +1
We numerically study the SU(2) gauge theory with two dynamical flavors of the domain-wall fermions in fundamental representation. The meson spectra and the residual mass are measur…
Hybrid Monte Carlo on Lefschetz Thimbles -- A study of the residual sign problem
H. Fujii, D. Honda, M. Kato +3
We consider a hybrid Monte Carlo algorithm which is applicable to lattice theories defined on Lefschetz thimbles. In the algorithm, any point (field configuration) on a thimble is…
Direct Proof of Reflection Positivity of Free Overlap Dirac Fermion
Yoshio Kikukawa, Kouta Usui
It is shown that free lattice Dirac fermions defined by overlap Dirac operator fulfill the Osterwalder-Schrader reflection positivity condition with respect to the link-reflection.
Reflection Positivity of N=1 Wess-Zumino model on the lattice with exact U(1)_R symmetry
Yoshio Kikukawa, Kouta Usui
By using overlap Majorana fermions, the chiral multiple can be formulated so that the supersymmetry is manifest and the vacuum energy is cancelled in the free limit, t…
A lattice study of N=2 Landau-Ginzburg model using a Nicolai map
Hiroki Kawai, Yoshio Kikukawa
It has been conjectured that the two-dimensional N=2 Wess-Zumino model with a quasi-homogeneous superpotential provides the Landau-Ginzburg description of the N=2 superconformal mi…
Reflection Positivity of Free Overlap Fermions
Yoshio Kikukawa, Kouta Usui
It is shown that free lattice fermions defined by overlap Dirac operator fulfill the Osterwalder-Schrader reflection positivity condition with respect to the link-reflection. The p…
Ginsparg-Wilson Formulation of 2D N =(2,2) SQCD with Exact Lattice Supersymmetry
Yoshio Kikukawa, Fumihiko Sugino
In this paper, we introduce the overlap Dirac operator, which satisfies the Ginsparg-Wilson relation, to the matter sector of two-dimensional N=(2,2) lattice supersymmetric QCD (SQ…
A construction of the Glashow-Weinberg-Salam model on the lattice with exact gauge invariance
Daisuke Kadoh, Yoshio Kikukawa
We present a gauge-invariant and non-perturbative construction of the Glashow-Weinberg-Salam model on the lattice, based on the lattice Dirac operator satisfying the Ginsparg-Wilso…
A simple construction of fermion measure term in U(1) chiral lattice gauge theories with exact gauge invariance
Daisuke Kadoh, Yoshio Kikukawa
In the gauge invariant formulation of U(1) chiral lattice gauge theories based on the Ginsparg-Wilson relation, the gauge field dependence of the fermion measure is determined thro…
Neutron electric dipole moment with external electric field method in lattice QCD
E. Shintani, S. Aoki, N. Ishizuka +6
We discuss a possibility that the Neutron Electric Dipole Moment (NEDM) can be calculated in lattice QCD simulations in the presence of the CP violating term. In this paper we…
Neutron electric dipole moment on the lattice
Eigo Shintani, S. Aoki, N. Ishizuka +6
We carry out a feasibility study toward a lattice QCD calculation of the neutron electric dipole moment (NEDM) in the presence of the term using two different approaches. In th…
Electromagnetic mass difference on the lattice
Yusuke Namekawa, Yoshio Kikukawa
We calculate electromagnetic mass difference of mesons using a method proposed by Duncan {\it et al}. The RG-improved gauge action and the non-compact Abelian gauge action are empl…
Neutron electric dipole moment from lattice QCD
E. Shintani, S. Aoki, N. Ishizuka +7
We carry out a feasibility study for the lattice QCD calculation of the neutron electric dipole moment (NEDM) in the presence of the term. We develop the strategy to obtain the…
Another approach to local cohomology problem in abelian lattice gauge theories
Daisuke Kadoh, Yoshio Kikukawa
A new technique is proposed to classify a topological field in abelian lattice gauge theories. We perform the classification by regarding the topological field as a local composite…
A local formulation of lattice Wess-Zumino model with exact $\U(1)_R$ symmetry
Yoshio Kikukawa, Hiroshi Suzuki
A lattice Wess-Zumino model is formulated on the basis of Ginsparg-Wilson fermions. In perturbation theory, our formulation is equivalent to the formulation by Fujikawa and Ishibas…
A numerical solution to the local cohomology problem in U(1) chiral gauge theories
Daisuke Kadoh, Yoshio Kikukawa
We consider a numerical method to solve the local cohomology problem related to the gauge anomaly cancellation in U(1) chiral gauge theories. In the cohomological analysis of the c…