On the problem of equation of state for the $Λ$ - field

Details On the problem of equation of state for the $Λ$ - field On the problem of equation of state for the $Λ$ - field

2002-03-04

arxiv.org/abs/gr-qc/0203010v2

Astron.Lett. 28 (2002) 434-437

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

7 pages, submitted to "Astronomy Letters", accepted; one reference added

Scientific paper

10.1134/1.1491965

Recently found accelarated expansion of our Universe is due to the presence of a new kind of matter called "$\Lambda$ - field" or quintessence. The limitations on its equation of state are found from the fact of its unclustering at all scales much smaller than the cosmological horizon. It is discussed how these limitations affect on the possibility to approximate the accelarated expansion by such cosmological models as the model of Chaplygin gas.

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