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.
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收藏
页数：30
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