An alternative to inflation? Critical role of neutrino anisotropic stress in CMB

T. Kajino; K. Kojima; D. Yamazaki; K. Ichiki; G. J. Mathews

doi:10.1016/j.ppnp.2009.12.053

An alternative to inflation? Critical role of neutrino anisotropic stress in CMB

T. Kajino^*
, K. Kojima
, D. Yamazaki
, K. Ichiki
, G. J. Mathews

^*此作品的通讯作者

科研成果: 期刊稿件 › 短篇评述 › 同行评审

摘要

We study the role of anisotropic stress in the evolution of curvature perturbations and the cosmic microwave background (CMB) power spectrum. We found that if the extra anisotropic stress preexisted before the neutrino decoupling, the cancellation of the anisotropic stress of neutrinos and extra anisotropic stress could lead to a spectrum that could reproduce the observed CMB power spectrum.

源语言	英语
页（从-至）	378-380
页数	3
期刊	Progress in Particle and Nuclear Physics
卷	64
期	2
DOI	https://doi.org/10.1016/j.ppnp.2009.12.053
出版状态	已出版 - 4月 2010
已对外发布	是

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10.1016/j.ppnp.2009.12.053

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title = "An alternative to inflation? Critical role of neutrino anisotropic stress in CMB",

abstract = "We study the role of anisotropic stress in the evolution of curvature perturbations and the cosmic microwave background (CMB) power spectrum. We found that if the extra anisotropic stress preexisted before the neutrino decoupling, the cancellation of the anisotropic stress of neutrinos and extra anisotropic stress could lead to a spectrum that could reproduce the observed CMB power spectrum.",

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AU - Kajino, T.

AU - Kojima, K.

AU - Yamazaki, D.

AU - Ichiki, K.

AU - Mathews, G. J.

PY - 2010/4

Y1 - 2010/4

N2 - We study the role of anisotropic stress in the evolution of curvature perturbations and the cosmic microwave background (CMB) power spectrum. We found that if the extra anisotropic stress preexisted before the neutrino decoupling, the cancellation of the anisotropic stress of neutrinos and extra anisotropic stress could lead to a spectrum that could reproduce the observed CMB power spectrum.

AB - We study the role of anisotropic stress in the evolution of curvature perturbations and the cosmic microwave background (CMB) power spectrum. We found that if the extra anisotropic stress preexisted before the neutrino decoupling, the cancellation of the anisotropic stress of neutrinos and extra anisotropic stress could lead to a spectrum that could reproduce the observed CMB power spectrum.

KW - Anisotropic stress

KW - CMB

KW - Neutrino

UR - https://www.scopus.com/pages/publications/77949567029

U2 - 10.1016/j.ppnp.2009.12.053

DO - 10.1016/j.ppnp.2009.12.053

M3 - 短篇评述

AN - SCOPUS:77949567029

SN - 0146-6410

VL - 64

SP - 378

EP - 380

JO - Progress in Particle and Nuclear Physics

JF - Progress in Particle and Nuclear Physics

IS - 2

ER -

An alternative to inflation? Critical role of neutrino anisotropic stress in CMB

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