Anisotropic homogeneous string cosmology with two-loop corrections

The two-loop (order α′) β-function equations, which are equivalent to the equations of motion of α′-corrected string effective action, are considered for anisotropic homogeneous space–times. These equations are solved for all Bianchi-type models in two schemes of effective action, namely R2 and Gauss–Bonnet schemes with zero cosmological constant and then the metric, dilaton and B-field are found at α′ perturbative corrections.

Abstract licence: CC BY

A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.