来自多重标量和 R2 引力的宇宙对撞机非高斯性

IF 5.4 1区物理与天体物理 Q1 Physics and Astronomy

Journal of High Energy Physics Pub Date : 2024-11-05 DOI:10.1007/JHEP11(2024)009

Shuntaro Aoki, Anish Ghoshal, Alessandro Strumia

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引用次数: 0

摘要

当一个额外的标量在膨胀过程中具有哈勃质量时，原始非高斯性的宇宙学对撞机信号就会在树级出现。我们批判性地回顾了形式主义，发现一大类基于普朗克尺度物理学的暴胀理论预测了引力底层附近的标量双谱。例如，在 R2 引力中，当引力标量具有哈勃尺度质量时，就会出现这种轻微信号。由于采用了亚普朗克尺度物理学，在标量在膨胀过程中发生多次转向的理论中，会出现远高于引力底限的信号。

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Cosmological collider non-Gaussianity from multiple scalars and R2 gravity

Cosmological collider signals of primordial non-Gaussianity arise at tree level when an extra scalar has Hubble mass during inflation. We critically review the formalism finding that a large class of inflationary theories, based on Planck-scale physics, predict a scalar bi-spectrum around the gravitational floor level. This mild signal arises for example in R² gravity, in the regime where its gravitational scalar has Hubble-scale mass. Signals much above the gravitational floor arise in theories where scalars undergo multiple turns during inflation, thanks to sub-Planckian physics.

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来源期刊

Journal of High Energy Physics 物理-物理：粒子与场物理

CiteScore

10.30

自引率

46.30%

发文量

2107

审稿时长

1.5 months

期刊介绍： The aim of the Journal of High Energy Physics (JHEP) is to ensure fast and efficient online publication tools to the scientific community, while keeping that community in charge of every aspect of the peer-review and publication process in order to ensure the highest quality standards in the journal. Consequently, the Advisory and Editorial Boards, composed of distinguished, active scientists in the field, jointly establish with the Scientific Director the journal''s scientific policy and ensure the scientific quality of accepted articles. JHEP presently encompasses the following areas of theoretical and experimental physics: Collider Physics Underground and Large Array Physics Quantum Field Theory Gauge Field Theories Symmetries String and Brane Theory General Relativity and Gravitation Supersymmetry Mathematical Methods of Physics Mostly Solvable Models Astroparticles Statistical Field Theories Mostly Weak Interactions Mostly Strong Interactions Quantum Field Theory (phenomenology) Strings and Branes Phenomenological Aspects of Supersymmetry Mostly Strong Interactions (phenomenology).