
VOLUME 68  ISSUE 10 
PAGE 721

How to determine an effective potential for a variable cosmological term
Starobinsky A.A.
PACS: 98.80.Es, 98.80.Hw
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 selfinteraction potential V(ip), 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).

