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A Low-Density Closed Universe

Kamionkowski, Marc and Toumbas, Nicolaos (1996) A Low-Density Closed Universe. Physical Review Letters, 77 (4). pp. 587-590. ISSN 0031-9007. doi:10.1103/PhysRevLett.77.587.

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Matter with an equation of state p = -ρ/3 may arise in certain scalar field theories, and the energy density of this matter decreases as a-2 with the scale factor a of the Universe. In this case, the Universe could be closed but still have a nonrelativistic-matter density Ω0<1. Furthermore, the cosmic microwave background could come from a causally connected region at the other side of the Universe. This model is currently viable and might be tested by a host of forthcoming observations.

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Kamionkowski, Marc0000-0001-7018-2055
Additional Information:© 1996 The American Physical Society Received 25 January 1996 We thank D. Helfand and D. Spergel for useful comments. This work was supported in part by the DOE under Contract No. DEFG02-92-ER 40699 and by NASA under Contract No. NAG5-3091.
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Department of Energy (DOE)DE-FG02-92-ER40699
Issue or Number:4
Record Number:CaltechAUTHORS:KAMprl96
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3485
Deposited By: Archive Administrator
Deposited On:08 Jun 2006
Last Modified:08 Nov 2021 19:56

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