Cosmic acceleration from nothing

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

The European Physical Journal C Pub Date : 2025-10-10 DOI:10.1140/epjc/s10052-025-14887-3

Michael R. R. Good, Eric V. Linder

引用次数: 0

Abstract

We show that if the universe began as a vacuum fluctuation instead of a singular Big Bang, it must undergo at least one period of cosmic acceleration. This is required by a “cosmological sum rule” derived using the Schwarzian form of the Friedmann equations. We discuss possible connections to conformal and Möbius transformations, and also compute that the best fit present cosmic data is consistent with the necessary crossing of the Schwarzian through zero having already occurred (while any late time crossing would not yet have happened in a \(\Lambda \)CDM cosmology).

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宇宙从无到有加速

我们证明，如果宇宙起源于真空涨落而不是单一的大爆炸，那么它必须经历至少一个宇宙加速周期。这是由弗里德曼方程的Schwarzian形式导出的“宇宙学和规则”所要求的。我们讨论了保形变换和Möbius变换之间的可能联系，并计算出目前最适合的宇宙数据与已经发生的史瓦兹穿越零的必要穿越是一致的（而在\(\Lambda \) CDM宇宙学中，任何晚时间的穿越都不会发生）。

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.