43 citations · 500 across the 75 of their papers we have counts for
6 papers · 1 filter
SFT non-locality in cosmology: solutions, perturbations and observational evidences
Alexey S. Koshelev
In this note cosmological models coming out of the String Field Theory (SFT) in application to the Dark Energy are reviewed. A way of constructing solutions in the case of linear m…
Enhancing non-Gaussianities by breaking local Lorentz invariance
Hael Collins
This talk briefly explains how the breaking of a Lorentz-invariant description of nature at tiny space-time intervals might affect the non-Gaussian character of the primordial fluc…
Stability Conditions For a Noncommutative Scalar Field Coupled to Gravity via the Positive Energy Theorem
Orfeu Bertolami, Carlos A. D. Zarro
The stability requirements for a noncommutative scalar field coupled to gravity is investigated through the positive energy theorem. It is shown that for a noncommutative scalar wi…
Non-singular modified gravity: the unification of the inflation, dark energy and dark mater
Shin'ichi Nojiri, Sergei D. Odintsov
Using the fluid representation, we formulate the conditions for the appearance of all four types finite-time future singularity in modified gravity in accelerating FRW universe. It…
F(R) supergravity
Sergei Ketov
We review the F(R) supergravity recently proposed in Phys. Lett. B674 (2009) 59 and Class. Quantum Grav. 26 (2009) 135006. Our construction supersymmetrizes popular f(R) theories o…
Higher-order brane gravity models
Mariusz P. Dabrowski, Adam Balcerzak
We discuss a very general theory of gravity, of which Lagrangian is an arbitrary function of the curvature invariants, on the brane. In general, the formulation of the junction con…