抑制r对称破缺的无尺度SUGRA中的修正混合膨胀

IF 4.8 2区物理与天体物理 Q2 PHYSICS, PARTICLES & FIELDS The European Physical Journal C Pub Date : 2025-02-18 DOI:10.1140/epjc/s10052-025-13911-w

Qian Wan, Da-Xin Zhang

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引用次数: 0

摘要

考虑了一种基于无尺度suga的良好动机的宇宙混合暴胀情景。证明了为了实现成功的膨胀，需要包含一个额外的含有\(n\ge 4\)的抑制r对称性破缺项\(S^n\)。由此产生的势被发现与斯塔宾斯基暴胀模型中的势相似（但不完全相同）。得到了相对较大的张量标量比\(r\sim 10^{-2}\)和谱指数\(n_s\approx 0.965\)，它们与n近似无关。

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Modified hybrid inflation in no-scale SUGRA with suppressed R-symmetry breaking

A well-motivated cosmological hybrid inflation scenario based on no-scale SUGRA is considered. It is demonstrated that an extra suppressed R-symmetry breaking term \(S^n\) with \(n\ge 4\) needs to be included in order to realize successful inflation. The resulting potential is found to be similar (but not identical) to the one in the Starobinsky inflation model. A relatively larger tensor-to-scalar ratio \(r\sim 10^{-2}\) and a spectral index \(n_s\approx 0.965\) are obtained, which are approximately independent of n.

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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.