Cosmological imprint of an energy component with general equation of state

R. R. Caldwell; Rahul Dave; Paul J. Steinhardt

doi:10.1103/PhysRevLett.80.1582

Cosmological imprint of an energy component with general equation of state

R. R. Caldwell, Rahul Dave, Paul J. Steinhardt

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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 (Λ). 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 Λ, it evolves dynamically and develops fluctuations, leaving a distinctive imprint on the microwave background anisotropy and mass power spectrum.

Original language	English (US)
Pages (from-to)	1582-1585
Number of pages	4
Journal	Physical review letters
Volume	80
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.80.1582
State	Published - Feb 23 1998
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1103/PhysRevLett.80.1582

Cite this

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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 (Λ). 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 Λ, it evolves dynamically and develops fluctuations, leaving a distinctive imprint on the microwave background anisotropy and mass power spectrum.",

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AU - Dave, Rahul

AU - Steinhardt, Paul J.

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N2 - 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 (Λ). 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 Λ, it evolves dynamically and develops fluctuations, leaving a distinctive imprint on the microwave background anisotropy and mass power spectrum.

AB - 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 (Λ). 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 Λ, it evolves dynamically and develops fluctuations, leaving a distinctive imprint on the microwave background anisotropy and mass power spectrum.

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Cosmological imprint of an energy component with general equation of state

Abstract

All Science Journal Classification (ASJC) codes

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