Testing eternal inflation with the kinetic Sunyaev Zel'dovich effect

	Testing eternal inflation with the kinetic Sunyaev Zel'dovich effect
	Zhang, Pengjie 1,2,3; Johnson, Matthew C.4,5
刊名	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
	2015-06-01
期号	6 页码:1
关键词	redshift surveys inflation initial conditions and eternal universe Sunyaev-Zehlovich effect
英文摘要	Perhaps the most controversial idea in modern cosmology is that our observable universe is contained within one bubble among many, all inhabiting the eternally inflating atultiverse. One of the few way to test this idea is to look for evidence of the relic inhomogeneities left by the collisions between other bubbles and our own. Such relic inhomogeneities will induce a coherent bulk flow over Gpc scales. Therefore, bubble collisions leave unique imprints in the cosmic microwave background ((CMB) through the kinetic Sunya.ev Zel'dovich (kSZ) effect, temperature anisotropies induced by the scattering of photons from coherently moving free electrons in the diffuse intergalactic medium. The kSZ signature produced by bubble collisions has a unique directional dependence and is tightly correlated with the galaxy distribution; it can therefore be distinguished from other contributions to the CMB anisotropies. An important advantage of the kSZ signature is that it peaks on areminute angular scales, where the limiting factors in making a detection are instrumental noise and foreground subtraction. This is in contrast to the collision signature in the primary CMB, which peaks on angular scales much larger than one degree, and whose detection is therefore limited by cosmic variance. In this paper, we examine the prospects for probing the inhomogeneities left by bubble collisions using the kSZ effect. We plovide a forecast, for detection using cross-correlations between CMB and galaxy surveys, finding that the (Ietect ability using the kSZ effect can be competitive with constraints from CMB temperature,. and polarization data.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics ; Physics, Particles & Fields
研究领域[WOS]	Astronomy & Astrophysics ; Physics
关键词[WOS]	BUBBLE COLLISIONS ; DARK FLOW ; PECULIAR VELOCITIES ; EARLY UNIVERSE ; FALSE VACUUM ; MICROWAVE ; GALAXIES ; REIONIZATION ; CONSTRAINTS ; TOMOGRAPHY
收录类别	SCI
语种	英语
WOS记录号	WOS:000359215400047
公开日期	2015-11-10
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/28236]
专题	上海天文台_星系宇宙学重点实验室
作者单位	1.Shanghai Jiao Tong Univ, Dept Phys Atron, Ctr Astron & Astrophys, Shanghai 200240, Peoples R China 2.Shanghai Jiao Tong Univ, IFSA Collaborat Innovat Ctr, Shanghai 200240, Peoples R China 3.Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 4.York Univ, Dept Phys & Astron, Toronto, ON M3J 1P3, Canada 5.Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada
推荐引用方式 GB/T 7714	Zhang, Pengjie,Johnson, Matthew C.. Testing eternal inflation with the kinetic Sunyaev Zel'dovich effect[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2015(6):1.
APA	Zhang, Pengjie,&Johnson, Matthew C..(2015).Testing eternal inflation with the kinetic Sunyaev Zel'dovich effect.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(6),1.
MLA	Zhang, Pengjie,et al."Testing eternal inflation with the kinetic Sunyaev Zel'dovich effect".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .6(2015):1.