Abstract
We examine the possibility that a significant component of the energy density of the universe has an equation-of-state different from that of matter, radiation or cosmological constant ($\Lambda$). An example is a cosmic scalar field evolving in a potential, but our treatment is more general. Including this component alters cosmic evolution in a way that fits current observations well. Unlike $\Lambda$, it evolves dynamically and develops fluctuations, leaving a distinctive imprint on the microwave background anisotropy and mass power spectrum.
Keywords
PhysicsCosmic microwave backgroundEquation of stateCosmological constantComponent (thermodynamics)LambdaDark energyScalar fieldAnisotropyUniverseCOSMIC cancer databaseCosmic background radiationLambda-CDM modelMatter power spectrumTheoretical physicsCosmologyAstrophysicsClassical mechanicsQuantum mechanics
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Publication Info
- Year
- 1998
- Type
- article
- Volume
- 80
- Issue
- 8
- Pages
- 1582-1585
- Citations
- 3442
- Access
- Closed
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Cite This
Robert R. Caldwell,
R. Dave,
Paul J. Steinhardt
(1998).
Cosmological Imprint of an Energy Component with General Equation of State.
Physical Review Letters
, 80
(8)
, 1582-1585.
https://doi.org/10.1103/physrevlett.80.1582
Identifiers
- DOI
- 10.1103/physrevlett.80.1582