Maximally entangled gluons for any x

IF 5 2区物理与天体物理 Q1 Physics and Astronomy Physical Review D Pub Date : 2025-01-22 DOI:10.1103/physrevd.111.014024

Yoshitaka Hatta, Jake Montgomery

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引用次数: 0

Abstract

Individual quarks and gluons at small x inside an unpolarized hadron can be regarded as Bell states in which qubits in the spin and orbital angular momentum spaces are maximally entangled. Using the machinery of quantum information science, we generalize this observation to all values 0<x<1 and describe gluons (but not quarks) as maximally entangled states between a qubit and a qudit. We introduce the conditional probability distribution P(lz|sz) of a gluon’s orbital angular momentum lz given its helicity sz. Restricting to the three states lz=0,±1, which constitute a qutrit, we explicitly compute P as a function of x.

Published by the American Physical Society

2025

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对于任意x的最大纠缠胶子

在非极化强子内的小x处的单个夸克和胶子可以被视为贝尔态，其中自旋和轨道角动量空间中的量子比特最大程度地纠缠在一起。利用量子信息科学的机制，我们将这一观察推广到所有值0<；x<1，并将胶子（而不是夸克）描述为量子位和量子位之间的最大纠缠态。在给定胶子的螺旋度的情况下，我们引入了胶子轨道角动量的条件概率分布P（lz|sz）。限制三个状态lz=0，±1，它们构成一个量值，我们明确地计算P作为x的函数。发表于美国物理学会2025

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.