Astronomy and Astrophysics – Astrophysics
Scientific paper
1998-10-27
JETP Lett. 68 (1998) 757-763; Pisma Zh.Eksp.Teor.Fiz. 68 (1998) 721-726
Astronomy and Astrophysics
Astrophysics
Latex, 7 pages, JETP Lett., in press, 1998
Scientific paper
10.1134/1.567941
It is shown that if a variable cosmological term in the present Universe is described by a scalar field with minimal coupling to gravity and with some phenomenological self-interaction potential $V(\varphi)$, then this potential can be unambiguously determined from the following observational data: either from the behaviour of density perturbations in dustlike matter component as a function of redshift (given the Hubble constant additionally), or from the luminosity distance as a function of redshift (given the present density of dustlike matter in terms of the critical one).
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