Gravitation: Foundations and Frontiers

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Gauge fields and inflation (2012, unknown): “ections and results in Ω1 = σ23, Ω2 = −σ13, Ω3 = σ12, (4.95) where Ωirepresents rotational velocity of the frame with respect to the Fermi propagated one (for a discussion on Fermi transport see e.g. [110]). Let us adopt the following dimensionless variables Σ± = 1 2H (σ22 ± σ33), Σij = σij H for i6”
Lanczos–Lovelock models of gravity (2013, background): “with respect to gab, it follows that ∇aEa b = 0 which is the analogue of standard Bianchi identity. (The proof proceeds exactly as in the case of standard Bianchi identity; see e.g., page 255 of Ref. [6]). This in turn implies that ∇a P kij b R a kij = 1 2 ∂bL (34) One consequence of this result i”