On the role of $\Lambda$-term in the evolution of Bianchi-I cosmological model with nonlinear spinor field

TL;DR

This paper investigates how including a cosmological constant affects the evolution of Bianchi-I cosmological models with nonlinear spinor fields, revealing that it induces oscillatory behavior.

Contribution

It demonstrates that the $ extstyle ext{Lambda}$-term in the Lagrangian causes oscillations in Bianchi-I models with nonlinear spinor fields, providing new insights into anisotropic universe dynamics.

Findings

Introduction of $ extstyle ext{Lambda}$-term generates oscillations in the model.

Self-consistent solutions for nonlinear spinor fields are obtained.

The oscillatory behavior depends on the $ extstyle ext{Lambda}$-term presence.

Abstract

Self-consistent solutions to nonlinear spinor field equations in General Relativity are studied for the case of Bianchi type-I space-time. It has been shown that introduction of $\Lambda$-term in the Lagrangian generates oscillations of the Bianchi type-I model.