Decay of Nambu–Goto cosmic string loops via coupling to a massive Kalb–Ramond field

IF 4.8 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS

The European Physical Journal C Pub Date : 2025-10-09 DOI:10.1140/epjc/s10052-025-14851-1

Ivan Rybak

引用次数: 0

Abstract

We study the dynamics of Nambu–Goto cosmic string loops coupled to a massive Kalb–Ramond field. This coupling provides a framework for describing the interaction between the cosmic string and the gauge field. Within this setup, we compute the energy flux associated with the radiation of massive Kalb–Ramond modes from oscillating string loops. For loops featuring kinks, we find that the decay time scales with the square of the loop length. In contrast, loops with cusps exhibit a decay time proportional to 3/2 times the loop length. The results are in good agreement with field-theoretic simulations of Nambu–Goto-like loops in the Abelian-Higgs model, supporting the validity of the calculation.

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南布-后陀宇宙弦环与大质量卡尔布-雷蒙场耦合的衰减

我们研究了与大质量Kalb-Ramond场耦合的Nambu-Goto宇宙弦环的动力学。这种耦合为描述宇宙弦和规范场之间的相互作用提供了一个框架。在此设置中，我们计算了与振荡弦环的大质量Kalb-Ramond模式辐射相关的能量通量。对于具有扭结的环路，我们发现衰减时间与环路长度的平方成正比。相反，带尖点的环路衰减时间与环路长度的3/2成正比。结果与阿贝尔-希格斯模型中Nambu-Goto-like环路的场论模拟结果很好地吻合，支持了计算的有效性。

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

The European Physical Journal C 物理-物理：粒子与场物理

CiteScore

8.10

自引率

15.90%

发文量

1008

审稿时长

2-4 weeks

期刊介绍： Experimental Physics I: Accelerator Based High-Energy Physics Hadron and lepton collider physics Lepton-nucleon scattering High-energy nuclear reactions Standard model precision tests Search for new physics beyond the standard model Heavy flavour physics Neutrino properties Particle detector developments Computational methods and analysis tools Experimental Physics II: Astroparticle Physics Dark matter searches High-energy cosmic rays Double beta decay Long baseline neutrino experiments Neutrino astronomy Axions and other weakly interacting light particles Gravitational waves and observational cosmology Particle detector developments Computational methods and analysis tools Theoretical Physics I: Phenomenology of the Standard Model and Beyond Electroweak interactions Quantum chromo dynamics Heavy quark physics and quark flavour mixing Neutrino physics Phenomenology of astro- and cosmoparticle physics Meson spectroscopy and non-perturbative QCD Low-energy effective field theories Lattice field theory High temperature QCD and heavy ion physics Phenomenology of supersymmetric extensions of the SM Phenomenology of non-supersymmetric extensions of the SM Model building and alternative models of electroweak symmetry breaking Flavour physics beyond the SM Computational algorithms and tools...etc.