Domain wall dominated universes - INSPIRE

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Domain wall dominated universes

Richard A. Battye
(
- Cambridge U., DAMTP
)
,
Martin Bucher
(
- Cambridge U., DAMTP
)
,
David Spergel
(
- Princeton U.
)

Aug, 1999

5 pages

e-Print:

astro-ph/9908047 [astro-ph]

Report number:

DAMTP-1999-106

View in:

ADS Abstract Service

reference search88 citations

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Abstract: (arXiv)

We consider a cosmogony with a dark matter component consisting of a network of frustrated domain walls. Such a network provides a solid dark matter component with

p=-(2/3)\rho

that remains unclustered on small scales and with

\Omega_{\rm dw}\approx 0.7

can reconcile a spatially flat universe with the many observations indicating

\Omega_{\rm m}\approx 0.3.

Because of its large negative pressure, this component can explain the recent observations indicating an accelerating universe without recourse to a non-vanishing cosmological constant. We explore the viability of this proposal and prospects for distinguishing it from other kinds of proposed dark matter with significant negative pressure.

astrophysics: missing-mass
domain wall: network
matter: density
cosmic background radiation: anisotropy
quintessence
numerical calculations: interpretation of experiments

References(32)

Figures(0)

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