116 citations · 589 across the 46 of their papers we have counts for
11 papers · 1 filter
Coleman's theorem on physical assumptions for no Goldstone bosons in two dimensions
Chigak Itoi
Thirty years ago, Coleman proved that no continuous symmetry is broken spontaneously in a two-dimensional relativistic quantum field theory. In his argument, however, it is difficu…
Renormalization group approach to multiple-arc random matrix models
S. Higuchi, C. Itoi, S. M. Nishigaki +1
We study critical and universal behaviors of unitary invariant non-gaussian random matrix ensembles within the framework of the large-N renormalization group. For a simple double-w…
Random Walk Construction of Spinor Fields on Three Dimensional Lattice
Masako Asano, Chigak Itoi, Shin-Ichi Kojima
Euclidean invariant Klein-Gordon, Dirac and massive Chern-Simons field theories are constructed in terms of a random walk with a spin factor on a three dimensional lattice. We exac…
Quantum Diffusion Process with a Complex Weight on Three Dimensional Lattice
Masako Asano, Chigak Itoi, Shin-Ichi Kojima
A rigorous definition of a path integral for a spinning particle in three dimensions is given on a regular cubic lattice. The critical diffusion constant and the associated critica…
Renormalization group flow in one- and two-matrix models
Saburo Higuchi, Chigak Itoi, Shinsuke Nishigaki +1
Large- renormalization group equations for one- and two-matrix models are derived. The exact renormalization group equation involving infinitely many induced interactions can be…
Chen and Itoi Reply
Wei Chen, Chigak Itoi
We reply a Comment (hep-th/xxx) on our recent paper published in Phys Rev Lett 72 (1994) 2527-2530. We point out that the author of the Comment overlooks the highly non-trivial Che…