Quantum mutual information, coherence and unified relations of top quarks in QCD processes

Quantum Physics [Submitted on 3 Apr 2026] Quantum mutual information, coherence and unified relations of top quarks in QCD processes Duo-Duo Chen, Xue-Ke Song, Liu Ye, Dong Wang As the most massive particle in the Standard Model, the top quark's exceptionally short lifetime preserves its spin polarization information through direct decay, making it an ideal system for probing quantum correlations in high-energy physics. In this letter, we presents a comprehensive investigation of quantum correlations in top quark-antiquark pairs produced through QCD. We employ multiple quantum information theoretic measures including quantum mutual information, relative entropy of coherence, complete complementarity relations, and the intrinsic relationship, establishing their dependence on kinematic variables. Furthermore, we find that for quarks and gluons initial mixing, as the probability of gluons Wgg increases, the maximum of the left-hand side of the intrinsic relation also increases. We thus believe the current findings are beneficial to insight into the systemic quantumness in QCD. Comments: 9 pages, 9 figures, comments are welcomed. Accepted by Physics Letters B Subjects: Quantum Physics (quant-ph); High Energy Physics - Phenomenology (hep-ph) Cite as: arXiv:2604.03005 [quant-ph]   (or arXiv:2604.03005v1 [quant-ph] for this version)   https://doi.org/10.48550/arXiv.2604.03005 Focus to learn more Submission history From: Duoduo Chen [view email] [v1] Fri, 3 Apr 2026 12:43:55 UTC (41,059 KB) Access Paper: HTML (experimental) view license Current browse context: quant-ph < prev   |   next > new | recent | 2026-04 Change to browse by: hep-ph References & Citations INSPIRE HEP NASA ADS Google Scholar Semantic Scholar Export BibTeX Citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Demos Related Papers About arXivLabs Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)