15 citations · 30 across the 5 of their papers we have counts for
5 papers
Microscopic study of topological phase transitions: Percolation point of view
Keisuke Kataoka, Ikuo Ichinose
We investigate microscopic mechanisms underlying decoherence-induced transitions between topologically ordered states. As a first case study, we analyze the color code using topolo…
Decohered color code and emerging mixed toric code by anyon proliferation: Topological entanglement negativity perspective
Keisuke Kataoka, Yoshihito Kuno, Takahiro Orito +1
We study how the color code under decoherence gives rise to an intrinsic mixed-state topological order (imTO), which has no counterpart in pure ground states of local gapped Hamilt…
Effective field theories for two-component repulsive bosons on lattice and their phase diagrams
Y. Kuno, K. Kataoka, I. Ichinose
In this paper, we consider the bosonic t-J model, which describes two-component hard-core bosons with a nearest-neighbor (NN) pseudo-spin interaction and a NN hopping. To study pha…
Bosonic t-J Model in a stacked triangular lattice and its phase diagram
Keisuke Kataoka, Yoshihito Kuno, Ikuo Ichinose
In this paper, we study phase diagram of a system of two-component hard-core bosons with nearest-neighbor (NN) pseudo-spin antiferromagnetic (AF) interactions in a stacked triangul…
Effective field theory for Sp(N) antiferromagnets and its phase structure
Keisuke Kataoka, Shinya Hattori, Ikuo Ichinose
In this paper, we study quantum Sp(N) antiferromagnetic (AF) Heisenberg models in two dimensions (2D) by using the Schwinger-boson representation and the path-integral methods. An…