Flexible extra dimensions

被引:2
|
作者
Petriakova, Polina [1 ,2 ,3 ]
Popov, Arkady A. [4 ]
Rubin, Sergey G. [3 ,4 ]
机构
[1] Univ Bologna, Dipartimento Fis & Astron, Via Irnerio 46, I-40126 Bologna, Italy
[2] Sez Bologna, INFN, IS FLAG, Viale B Pichat 6-2, I-40127 Bologna, Italy
[3] Natl Res Nucl Univ MEPhI, Moscow Engn Phys Inst, Kashirskoe shosse 31, Moscow 115409, Russia
[4] Kazan Fed Univ, NI Lobachevsky Inst Math & Mech, Kremlevskaya St 18, Kazan 420008, Russia
来源
EUROPEAN PHYSICAL JOURNAL C | 2023年 / 83卷 / 05期
关键词
GRAVITY THEORIES; LOCALIZATION; COSMOLOGY;
D O I
10.1140/epjc/s10052-023-11542-7
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
This paper discusses the origin of the small parameters with the aim of explaining the Hierarchy problem. The flexible extra dimensions are an essential tool in the process by which physical parameters are formed. The evolution of a multidimensional metric starts at the Planck scale and is completed with the static extra-dimensional metric and the 4-dim de Sitter space at high energies, where the exponential production of causally disconnected universes begins. Quantum fluctuations independently distort the metric within these universes, causing inflationary processes within them. Some of these universes tend asymptotically towards states characterised by small Hubble parameters. The effective parameter reduction applied to the Higgs sector of the Standard Model is explained by the presence of small-amplitude distributions of a scalar field in a fraction of these universes.
引用
收藏
页数:11
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