The locally rotationally symmetric Bianchi-type Ⅱ string cosmological models with bulk viscosity areobtained, where an equation of state, p = kλ, and a relation between metric potentials, R = ASn, are adopted. Theph...The locally rotationally symmetric Bianchi-type Ⅱ string cosmological models with bulk viscosity areobtained, where an equation of state, p = kλ, and a relation between metric potentials, R = ASn, are adopted. Thephysical features of the models are also discussed. In special cases the model reduces to the string models withoutviscosity that was previously given in the literatures.展开更多
文摘The locally rotationally symmetric Bianchi-type Ⅱ string cosmological models with bulk viscosity areobtained, where an equation of state, p = kλ, and a relation between metric potentials, R = ASn, are adopted. Thephysical features of the models are also discussed. In special cases the model reduces to the string models withoutviscosity that was previously given in the literatures.
