Programme

P.83 -- Posters, VCTP-51

Date: Thursday, 6 August 2026

Time: 09:30 - 10:30

Power-law Bianchi type I inflation with multiple vector fields

Duy H Nguyen (1), Tuan Q Do (1)

(1) Phenikaa Institute for Advanced Study, Phenikaa University, Hanoi 12116, Vietnam

We investigate anisotropic cosmic inflation within a supergravity-motivated Bianchi type I model featuring a scalar field non-minimally coupled to three orthogonal vector fields. We identify four types of power-law solutions, classified by the number of persisting vector fields, and determine their quantitative and qualitative stability regions. Notably, vector fields with larger coupling constants persist during cosmic expansion, while those with smaller couplings dilute. Finally, we show that cosmic anisotropy depends directly on the number of surviving vector fields.

Presenter: Nguyen Hoang Duy