Massive 3D Gravity Big-Bounce
H.L.C.Louzada, U.Camara dS, G.M.Sotkov (Espirito Santo Fed.Univ.,, Vitoria)
TL;DR
This paper explores an extension of New Massive 3D Gravity coupled with scalar matter, demonstrating stable bounce cosmological solutions that describe an eternally accelerating universe between two de Sitter vacua.
Contribution
It introduces a scalar matter extension of 3D gravity and finds stable bounce solutions within the unitarity bounds using the superpotential method.
Findings
Identifies a family of bounce solutions at the unitarity bound λ = -1.
Demonstrates these solutions describe an eternally accelerating universe.
Verifies perturbative unitarity of the extended gravity model.
Abstract
The properties of an extension of the New Massive 3D Gravity by scalar matter with Higgs-like self-interaction are investigated. Its perturbative unitarity consistency is verified for a family of cosmological Bounce solutions found by the superpotential method. They correspond to the lower bound of the BHT unitarity window and describe eternally accelerated 3D Universe between two initial/final stable vacua states.
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