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Stability of accelerating cosmology in two scalar-tensor theory: Little Rip versus de Sitter
Yusaku Ito, Shin'ichi Nojiri, Sergei D. Odintsov
We develop the general reconstruction scheme in two scalar model. The quintom-like theory which may describe (different) non-singular Little Rip or de Sitter cosmology is reconstru…
Could the dynamical Lorentz symmetry breaking induce the superluminal neutrinos?
Shin'ichi Nojiri, Sergei D. Odintsov
The toy fermion model coupled with Lagrange multiplier constraint field is proposed. The possibility of superluminal neutrino propagation as result of dynamical Lorentz symmetry br…
Oscillations of the F(R) dark energy in the accelerating universe
E. Elizalde, S. D. Odintsov, L. Sebastiani +1
Oscillations of the dark energy around the phantom divide line, , both during the matter era and also in the de Sitter epoch are investigated. The analysis during…
Cyclic, ekpyrotic and little rip universe in modified gravity
Shin'ichi Nojiri, Sergei D. Odintsov, Diego Saez-Gomez
We propose the reconstruction of gravity in such a way that corresponding theory admits cyclic and ekpyrotic universe solutions. The number of explicit examples of such $F(R…
Models for Little Rip Dark Energy
Paul H. Frampton, Kevin J. Ludwick, Shin'ichi Nojiri +2
We examine in more detail specific models which yield a little rip cosmology, i.e., a universe in which the dark energy density increases without bound but the universe never reach…
Viscous Little Rip Cosmology
I. Brevik, E. Elizalde, S. Nojiri +1
Dark energy of phantom or quintessence nature with an equation of state parameter almost equal to -1 often leads the universe evolution to a finite-time future singularity. An…