53 citations · 131 across the 19 of their papers we have counts for
19 papers
Understanding Color Confinement through Quantum Reference Frames and Relational Observables
Kei-Ichi Kondo
We present a formulation for color confinement on the basis of quantum reference frames (QRFs) and relational observables. In the QRF approach to color confinement, colored quantit…
Quark confinement due to unified magnetic monopoles and vortices reduced from symmetric instantons with holography
Kei-Ichi Kondo
We develop a geometric framework to analyze quark confinement in four-dimensional Euclidean Yang--Mills theory in terms of finite-action topological defects. Starting from…
Quark confinement consistent with holography due to hyperbolic magnetic monopoles and hyperbolic vortices unifiedly reduced from symmetric instantons
Kei-Ichi Kondo
We give a review on hyperbolic magnetic monopoles and hyperbolic vortices obtained in the unified way through the conformal equivalence by the dimensional reduction from the symmet…
Residual gauge symmetry and color confinement in the Yang-Mills theory
Naoki Fukushima, Kei-Ichi Kondo
We examine the restoration of the residual gauge symmetry in the Yang-Mills theory to be regarded as a confinement criterion. For this purpose we restrict the four-dimensional $SU(…
Further numerical evidences for the gauge-independent separation between Confinement and Higgs phases in lattice SU(2) gauge theory with a scalar field in the fundamental representation
Akihiro Shibata, Kei-Ichi Kondo
In the lattice gauge-scalar model with a single scalar field in the fundamental representation of the gauge group SU(2), we have quite recently found that there exists a gauge-inde…
Impossibility via W states and feasibility via W-like states for perfect quantum teleportation
Sora Kobayashi, Kei-Ichi Kondo
We examine the two-party perfect quantum teleportation of an unknown 1-qubit state in the case of sharing various 3-qubit entangled states between a sender and a receiver: GHZ stat…