Einstein's Other Gravity and the Acceleration of the Universe

2010/05/31 by Eric V. Linder · 5 citations
Physics and Astronomy · #astro-ph.CO #gr-qc

paper · pdf · doi:10.1103/physrevd.81.127301

published as Phys.Rev.D81:127301,2010 · 7 pages, 1 figure; v2 new f(T) model without hidden cosmological constant

arxiv created 2010/08/26 · arxiv updated 2010/08/27

Abstract

Spacetime curvature plays the primary role in general relativity but Einstein later considered a theory where torsion was the central quantity. Just as the Einstein-Hilbert action in the Ricci curvature scalar R can be generalized to f(R) gravity, we consider extensions of teleparallel, or torsion scalar T, gravity to f(T) theories. The field equations are naturally second order, avoiding pathologies, and can give rise to cosmic acceleration with unique features.

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• A generic dynamical system formulation for Bianchi-I cosmology with isotropic fluid in f(Q) gravity
• Bouncing cosmology, F(T) teleparallel gravity and entropy of apparent horizon
• Dynamics of late time universe in f(Q) gravity
• Growth factor in teleparallel Gauss-Bonnet gravity
• Cosmological model in the framework of f(R,L_m) gravity with quadratic equation of state parameter
• Quantum Gravity Meets DESI: Dynamical Dark Energy in Light of the Trans-Planckian Censorship Conjecture

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