2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/44582We examine the cosmological solutions of a tachyon field non minimally coupled to gravity through an effective Born-Infeld interacting Lagrangian with a power law potential, in order to investigate its equation of state as related to tracking properties. We find exact solutions in the case of a tachyon dominated Universe and when the dominant component of the stress energy tensor is determined by some other perfect fluid.9 pages, 2 figuresHigh Energy Physics - PhenomenologyAstrophysicsGeneral Relativity and Quantum CosmologyHigh Energy Physics - Theorytext