Cosmological Imprint of an Energy Component with General Equation of State
Robert R. Caldwell, R. Dave, Paul Joseph Steinhardt
Physical Review Letters · 1998 · 3,708 citationsOpen access
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 ( $\ensuremath{\Lambda}$). 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 $\ensuremath{\Lambda}$, it evolves dynamically and develops fluctuations, leaving a distinctive imprint on the microwave background anisotropy and mass power spectrum.
Cite this paper
Caldwell, R. R., Dave, R., & Steinhardt, P. J. (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
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