具有明确（\△\）激发的奇偶性和时间反转违反核力

IF 2.6 3区物理与天体物理 Q2 PHYSICS, NUCLEAR

The European Physical Journal A Pub Date : 2024-10-28 DOI:10.1140/epja/s10050-024-01426-z

L. Gandor, H. Krebs, E. Epelbaum

{"title":"具有明确（\\△\\）激发的奇偶性和时间反转违反核力","authors":"L. Gandor, H. Krebs, E. Epelbaum","doi":"10.1140/epja/s10050-024-01426-z","DOIUrl":null,"url":null,"abstract":"<div><p>We emphasize the usefulness of treating delta resonances as explicit degrees of freedom in applications of chiral effective field theory (EFT) to parity-violating and time-reversal-violating (PVTV) nuclear interactions. Compared with the delta-less framework, the explicit inclusion of the delta isobar allows one to resum certain types of contributions to the PVTV two-pion exchange two- and three-nucleon potentials without at the same time introducing any unknown parameters up to next-to-next-to-leading order in the EFT expansion. We provide the corresponding expressions for the delta contributions in momentum and coordinate spaces and compare the convergence of the EFT expansion in both formulations.</p></div>","PeriodicalId":786,"journal":{"name":"The European Physical Journal A","volume":"60 10","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epja/s10050-024-01426-z.pdf","citationCount":"0","resultStr":"{\"title\":\"Parity and time-reversal violating nuclear forces with explicit \\\\(\\\\Delta \\\\)-excitations\",\"authors\":\"L. Gandor, H. Krebs, E. Epelbaum\",\"doi\":\"10.1140/epja/s10050-024-01426-z\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>We emphasize the usefulness of treating delta resonances as explicit degrees of freedom in applications of chiral effective field theory (EFT) to parity-violating and time-reversal-violating (PVTV) nuclear interactions. Compared with the delta-less framework, the explicit inclusion of the delta isobar allows one to resum certain types of contributions to the PVTV two-pion exchange two- and three-nucleon potentials without at the same time introducing any unknown parameters up to next-to-next-to-leading order in the EFT expansion. We provide the corresponding expressions for the delta contributions in momentum and coordinate spaces and compare the convergence of the EFT expansion in both formulations.</p></div>\",\"PeriodicalId\":786,\"journal\":{\"name\":\"The European Physical Journal A\",\"volume\":\"60 10\",\"pages\":\"\"},\"PeriodicalIF\":2.6000,\"publicationDate\":\"2024-10-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1140/epja/s10050-024-01426-z.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The European Physical Journal A\",\"FirstCategoryId\":\"4\",\"ListUrlMain\":\"https://link.springer.com/article/10.1140/epja/s10050-024-01426-z\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, NUCLEAR\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The European Physical Journal A","FirstCategoryId":"4","ListUrlMain":"https://link.springer.com/article/10.1140/epja/s10050-024-01426-z","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, NUCLEAR","Score":null,"Total":0}

引用次数: 0

摘要

我们强调，在将手性有效场理论（EFT）应用于违反奇偶性和时间反转（PVTV）的核相互作用时，将德尔塔共振作为明确的自由度是非常有用的。与不包含德尔塔的框架相比，明确包含德尔塔同位体使我们能够重述对 PVTV 双离子交换双核和三核势的某些类型的贡献，而同时又不会在 EFT 扩展中引入任何达到次导阶的未知参数。我们提供了动量空间和坐标空间中德尔塔贡献的相应表达式，并比较了两种表述中 EFT 扩展的收敛性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Parity and time-reversal violating nuclear forces with explicit \(\Delta \)-excitations

We emphasize the usefulness of treating delta resonances as explicit degrees of freedom in applications of chiral effective field theory (EFT) to parity-violating and time-reversal-violating (PVTV) nuclear interactions. Compared with the delta-less framework, the explicit inclusion of the delta isobar allows one to resum certain types of contributions to the PVTV two-pion exchange two- and three-nucleon potentials without at the same time introducing any unknown parameters up to next-to-next-to-leading order in the EFT expansion. We provide the corresponding expressions for the delta contributions in momentum and coordinate spaces and compare the convergence of the EFT expansion in both formulations.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

The European Physical Journal A 物理-物理：核物理

CiteScore

5.00

自引率

18.50%

发文量

216

审稿时长

3-8 weeks

期刊介绍： Hadron Physics Hadron Structure Hadron Spectroscopy Hadronic and Electroweak Interactions of Hadrons Nonperturbative Approaches to QCD Phenomenological Approaches to Hadron Physics Nuclear and Quark Matter Heavy-Ion Collisions Phase Diagram of the Strong Interaction Hard Probes Quark-Gluon Plasma and Hadronic Matter Relativistic Transport and Hydrodynamics Compact Stars Nuclear Physics Nuclear Structure and Reactions Few-Body Systems Radioactive Beams Electroweak Interactions Nuclear Astrophysics Article Categories Letters (Open Access) Regular Articles New Tools and Techniques Reviews.