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Hyung S. Choi

Publications and source records attributed to Hyung S. Choi.

2 recordsLinked to original sources

Weyl Spinors with Proto-charges: A Substructure Model for Elementary Particles

We present a conceptual overview of a new substructure model of elementary particles, motivated in part by the Gell-Mann-Nishijima formula. In this approach, Weyl spinors endowed with proto-charges generate all known elementary fermions via their conjugate pairs, while bosons arise naturally as composites. The model predicts a new class of massive neutral bosons that serve as dark matter candidates, accounts for the existence of three generations of fermions, and reproduces the SU(3) x SU(2) x U(1) symmetry as a low-energy limit. Elementary particles acquire effective masses from internal binding energy, eliminating the need for ad hoc Yukawa couplings. Neutrinos emerge only in left-handed states, gain mass through their substructure rather than chirality mixing. From the simple proposition that elementary particles are Weyl spinors with proto-charges emerges a coherent and comprehensive picture of elementary particles and fields. Experimental implications of the model includes: no proton decay, absence of sterile neutrinos, absence of Majorana neutrinos, and a possible detection of new massive neutral bosons as dark matter.

physics.gen-ph↗

Quantum Key Distribution using Expectation Values of Super-classical GHZ States

We propose a new quantum key distribution scheme that is based on the optimum expectation values of maximally entangled Greenberger-Horne-Zeilinger states. Our protocol makes use of the degrees of freedom in continuously variable angles, thereby increasing the security of the key distribution. Outlined are two protocols that distribute a key from Alice to Bob using the above idea, followed by an extension that allows for the same key to be shared with Charlie. We show how this scheme provides for certain detection of any eavesdropper through absolute violation rather than the probabilistic violation used in many protocols.

quant-ph↗