The interacting multiverse and its effect on the cosmic microwave background

被引：14

作者：

Bouhmadi-Lopez, Mariam ^{[1
,2
]}

Kramer, Manuel ^{[3
,4
]}

Morais, Joao ^{[1
]}

Robles-Perez, Salvador ^{[5
,6
]}

机构：

[1] Univ Basque Country, Dept Theoret Phys, UPV EHU, POB 644, Bilbao 48080, Spain

[2] Basque Fdn Sci, Ikerbasque, Bilbao 48011, Spain

[3] Univ Szczecin, Inst Phys, Wielkopolska 15, PL-70451 Szczecin, Poland

[4] Katholieke Univ Leuven, Inst Theoret Phys, Celestijnenlaan 200D, B-3001 Leuven, Belgium

[5] IES Miguel Delibes, Dept Matemat, Miguel Hernandez 2, TorrejOn De La Calzada 28991, Spain

[6] Estn Ecol Biocosmol, Pedro de Alvarado 14, Medellin 06411, Spain

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2019年 / 02期

基金：

欧洲研究理事会;

关键词：

quantum cosmology; cosmological perturbation theory; quantum gravity phenomenology; 3RD QUANTIZATION; GRAVITON CREATION; ENERGY-DENSITY; PERTURBATIONS; FORMALISM;

D O I：

10.1088/1475-7516/2019/02/057

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study a toy model of a multiverse consisting of canonically quantized universes that interact with each other on a quantum level based on a field-theoretical formulation of the Wheeler-DeWitt equation. This interaction leads to the appearance of a pre-inflationary phase in the evolution of the individual universes. We analyze scalar perturbations within the model and calculate the influence of the pre-inflationary phase onto the power spectrum of these perturbations. The result is that there is a suppression of power on large scales, which can describe well the Planck 2018 data for the cosmic microwave background anisotropies and could thus indicate a possible solution to the observed quadrupole discrepancy.

引用

页数：30

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