On gravitational repulsion

Tsvi Piran

doi:10.1023/A:1018877928270

On gravitational repulsion

Tsvi Piran^*

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

The concepts of negative gravitational mass and gravitational repulsion are alien to general relativity. Still, we show here that small negative fluctuations - small dimples in the primordial density field - that act as if they have an effective negative gravitational mass, play a dominant role in shaping our Universe. These initially tiny perturbations repel matter surrounding them, expand and grow to become voids in the galaxy distribution. These voids - regions with a diameter of 40h^-1 Mpc which are almost devoid of galaxies - are the largest objects in the Universe.

Original language	English
Pages (from-to)	1363-1370
Number of pages	8
Journal	General Relativity and Gravitation
Volume	29
Issue number	11
DOIs	https://doi.org/10.1023/A:1018877928270
State	Published - 1997

Keywords

Primordial density fluctuations

Access to Document

10.1023/A:1018877928270

Cite this

@article{a07f0634b51346eab648ccbad099f7ad,

title = "On gravitational repulsion",

abstract = "The concepts of negative gravitational mass and gravitational repulsion are alien to general relativity. Still, we show here that small negative fluctuations - small dimples in the primordial density field - that act as if they have an effective negative gravitational mass, play a dominant role in shaping our Universe. These initially tiny perturbations repel matter surrounding them, expand and grow to become voids in the galaxy distribution. These voids - regions with a diameter of 40h-1 Mpc which are almost devoid of galaxies - are the largest objects in the Universe.",

keywords = "Primordial density fluctuations",

author = "Tsvi Piran",

year = "1997",

doi = "10.1023/A:1018877928270",

language = "אנגלית",

volume = "29",

pages = "1363--1370",

journal = "General Relativity and Gravitation",

issn = "0001-7701",

publisher = "Springer New York",

number = "11",

}

TY - JOUR

T1 - On gravitational repulsion

AU - Piran, Tsvi

PY - 1997

Y1 - 1997

N2 - The concepts of negative gravitational mass and gravitational repulsion are alien to general relativity. Still, we show here that small negative fluctuations - small dimples in the primordial density field - that act as if they have an effective negative gravitational mass, play a dominant role in shaping our Universe. These initially tiny perturbations repel matter surrounding them, expand and grow to become voids in the galaxy distribution. These voids - regions with a diameter of 40h-1 Mpc which are almost devoid of galaxies - are the largest objects in the Universe.

AB - The concepts of negative gravitational mass and gravitational repulsion are alien to general relativity. Still, we show here that small negative fluctuations - small dimples in the primordial density field - that act as if they have an effective negative gravitational mass, play a dominant role in shaping our Universe. These initially tiny perturbations repel matter surrounding them, expand and grow to become voids in the galaxy distribution. These voids - regions with a diameter of 40h-1 Mpc which are almost devoid of galaxies - are the largest objects in the Universe.

KW - Primordial density fluctuations

UR - https://www.scopus.com/pages/publications/0031500402

U2 - 10.1023/A:1018877928270

DO - 10.1023/A:1018877928270

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:0031500402

SN - 0001-7701

VL - 29

SP - 1363

EP - 1370

JO - General Relativity and Gravitation

JF - General Relativity and Gravitation

IS - 11

ER -

On gravitational repulsion

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this