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Title: Voids of dark energy

Abstract

We investigate the clustering properties of a dynamical dark energy component. In a cosmic mix of a pressureless fluid and a light scalar field, we follow the linear evolution of spherical matter perturbations. We find that the scalar field tends to form underdensities in response to the gravitationally collapsing matter. We thoroughly investigate these voids for a variety of initial conditions, explain the physics behind their formation, and consider possible observational implications. Detection of dark energy voids will clearly rule out the cosmological constant as the main source of the present acceleration.

Authors:
;  [1]
  1. CERCA, Department of Physics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106-7079 (United States)
Publication Date:
OSTI Identifier:
21020131
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. D, Particles Fields; Journal Volume: 75; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevD.75.063507; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ACCELERATION; COSMOLOGICAL CONSTANT; COSMOLOGY; DETECTION; DISTURBANCES; GRAVITATIONAL COLLAPSE; NONLUMINOUS MATTER; SCALAR FIELDS; SPHERICAL CONFIGURATION

Citation Formats

Dutta, Sourish, and Maor, Irit. Voids of dark energy. United States: N. p., 2007. Web. doi:10.1103/PHYSREVD.75.063507.
Dutta, Sourish, & Maor, Irit. Voids of dark energy. United States. doi:10.1103/PHYSREVD.75.063507.
Dutta, Sourish, and Maor, Irit. Thu . "Voids of dark energy". United States. doi:10.1103/PHYSREVD.75.063507.
@article{osti_21020131,
title = {Voids of dark energy},
author = {Dutta, Sourish and Maor, Irit},
abstractNote = {We investigate the clustering properties of a dynamical dark energy component. In a cosmic mix of a pressureless fluid and a light scalar field, we follow the linear evolution of spherical matter perturbations. We find that the scalar field tends to form underdensities in response to the gravitationally collapsing matter. We thoroughly investigate these voids for a variety of initial conditions, explain the physics behind their formation, and consider possible observational implications. Detection of dark energy voids will clearly rule out the cosmological constant as the main source of the present acceleration.},
doi = {10.1103/PHYSREVD.75.063507},
journal = {Physical Review. D, Particles Fields},
number = 6,
volume = 75,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}