在胶子饱和方法中研究低比约肯x时的部分子纠缠熵

IF 1.1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astronomische Nachrichten Pub Date : 2024-01-03 DOI:10.1002/asna.20230173

Gabriel Silveira Ramos, Magno V. T. Machado

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引用次数: 0

摘要

在这项研究中，我们在 ep$$ ep$ 碰撞的深非弹性散射背景下研究了纠缠熵。计算基于一种形式主义，即小-x$$ x $$处的粒子态是最大纠缠态，由大量以相等概率出现的微观态组成。我们考虑了胶子数量的分析表达式，Ngluon$$ {N}_{\mathrm{gluon}}$$，是在量子色动力学（QCD）彩色偶极子图景框架内从偶极子-目标振幅的胶子饱和模型中推导出来的。将纠缠熵与在高能量下的 pp$$ pp $ 和 ep$$ ep $ 对撞中测得的热力学熵进行了比较。

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Investigating the partonic entanglement entropy at low Bjorken-x within Gluon saturation approach

In this work, the entanglement entropy is examined within the context of deep inelastic scattering in $e p$ collisions. The calculation is based on a formalism where the partonic state at small- $x$ is maximally entangled, consisting of a large number of micro-states occurring with equal probabilities. Analytical expressions for the number of gluons, $N_{gluon}$ , are considered, derived from gluon saturation models for dipole-target amplitudes within the framework of the Quantum Chromodynamics (QCD) color dipole picture. A comparison of the entanglement entropy with thermodynamic entropy measured in $p p$ and $e p$ collisions at high energies is done.

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来源期刊

Astronomische Nachrichten 地学天文-天文与天体物理

CiteScore

1.80

自引率

11.10%

发文量

审稿时长

4-8 weeks

期刊介绍： Astronomische Nachrichten, founded in 1821 by H. C. Schumacher, is the oldest astronomical journal worldwide still being published. Famous astronomical discoveries and important papers on astronomy and astrophysics published in more than 300 volumes of the journal give an outstanding representation of the progress of astronomical research over the last 180 years. Today, Astronomical Notes/ Astronomische Nachrichten publishes articles in the field of observational and theoretical astrophysics and related topics in solar-system and solar physics. Additional, papers on astronomical instrumentation ground-based and space-based as well as papers about numerical astrophysical techniques and supercomputer modelling are covered. Papers can be completed by short video sequences in the electronic version. Astronomical Notes/ Astronomische Nachrichten also publishes special issues of meeting proceedings.