85 citations · 105 across the 9 of their papers we have counts for
9 papers
Exact four-point function and OPE for an interacting quantum field theory with space/time anisotropic scale invariance
Hidehiko Shimada, Hirohiko Shimada
We identify a nontrivial yet tractable quantum field theory model with space/time anisotropic scale invariance, for which one can exactly compute certain four-point correlation fun…
Fusion of spin fields in conformal field theories
Yacine Ikhlef, Hirohiko Shimada
In generic conformal field theories with symmetry, we identify a primary field with rational Kac indices, which produces the full charged and neutral secto…
Classes of low-frequency earthquakes based on inter-time distribution reveal a precursor event for the 2011 Great Tohoku Earthquake
Tomoki Tokuda, Hirohiko Shimada
Recently, slow earthquakes (slow EQ) have received much attention relative to understanding the mechanisms underlying large earthquakes and to detecting their precursors. Low-frequ…
Conformal amplitude hierarchy and the Poincare disk
Hirohiko Shimada
The amplitude for the singlet channels in the 4-point function of the fundamental field in the conformal field theory of the 2d model is studied as a function of . For a…
Quantum Interactions of Topological Solitons from Electrodynamics
Hirohiko Shimada, Kazutaka Takahashi, Hiroaki. T. Ueda
The Casimir energy for the classically stable configurations of the topological solitons in 2D quantum antiferromagnets is studied by performing the path-integral over quantum fluc…
Fractal dimensions of self-avoiding walks and Ising high-temperature graphs in 3D conformal bootstrap
Hirohiko Shimada, Shinobu Hikami
The fractal dimensions of polymer chains and high-temperature graphs in the Ising model both in three dimension are determined using the conformal bootstrap applied for the continu…
Phase diagram and the strong-coupling fixed point in the disordered O(n) loop model
Hirohiko Shimada, Jesper Lykke Jacobsen, Yoshitomo Kamiya
We numerically study the phase diagram and critical properties of the two-dimensional disordered O(n) loop model by using the transfer matrix and the worm Monte Carlo methods. The…
Coulomb Gas Partition Function of a Layered Loop Model
Hirohiko Shimada
We consider a two-dimensional bi-layered loop model with a certain interlayer coupling and study its spectrum on a torus. Each layer consists of an model on a honeycomb latt…
Disordered O(n) Loop Model and Coupled Conformal Field Theories
Hirohiko Shimada
A family of models for fluctuating loops in a two dimensional random background is analyzed. The models are formulated as O(n) spin models with quenched inhomogeneous interactions.…