Connecting the nonsingular origin of the universe, the vacuum structure and the cosmological constant problem
EI Guendelman, P Labrana - International Journal of Modern …, 2013 - World Scientific
We consider a nonsingular origin for the universe starting from an Einstein static universe,
the so-called" emergent universe" scenario, in the framework of a theory which uses two …
the so-called" emergent universe" scenario, in the framework of a theory which uses two …
Emergent cosmology, inflation and dark energy
E Guendelman, R Herrera, P Labrana… - General Relativity and …, 2015 - Springer
A new class of gravity–matter models defined in terms of two independent non-Riemannian
volume forms (alternative generally covariant integration measure densities) on the space …
volume forms (alternative generally covariant integration measure densities) on the space …
Unified dark energy and dark matter from dynamical spacetime
D Benisty, EI Guendelman - Physical Review D, 2018 - APS
A unification of dark matter and dark energy based on a dynamical spacetime theory is
suggested. By introducing a dynamical spacetime vector field χ μ as a Lagrange multiplier …
suggested. By introducing a dynamical spacetime vector field χ μ as a Lagrange multiplier …
Unifying inflation with early and late dark energy with multiple fields: Spontaneously broken scale invariant two measures theory
E Guendelman, R Herrera, D Benisty - Physical Review D, 2022 - APS
A unified multiscalar field model with three flat regions is discussed. The three flat regions
are the inflation, early-and late dark energy epochs. The potential is obtained by a …
are the inflation, early-and late dark energy epochs. The potential is obtained by a …
Unified dark energy and dust dark matter dual to quadratic purely kinetic K-essence
We consider a modified gravity plus single scalar-field model, where the scalar Lagrangian
couples symmetrically both to the standard Riemannian volume-form (spacetime integration …
couples symmetrically both to the standard Riemannian volume-form (spacetime integration …
Interacting diffusive unified dark energy and dark matter from scalar fields
D Benisty, EI Guendelman - The European Physical Journal C, 2017 - Springer
Here we generalize ideas of unified dark matter–dark energy in the context of two measure
theories and of dynamical space time theories. In two measure theories one uses metric …
theories and of dynamical space time theories. In two measure theories one uses metric …
Unification of dark energy and dark matter from diffusive cosmology
Generalized ideas of unified dark matter and dark energy in the context of dynamical space
time theories with a diffusive transfer of energy are studied. The dynamical space-time …
time theories with a diffusive transfer of energy are studied. The dynamical space-time …
Unification: Emergent universe followed by inflation and dark epochs from multi-field theory
E Guendelman, R Herrera - Annals of Physics, 2024 - Elsevier
A two scalar field model that incorporates non Riemannian Measures of integration or
usually called Two Measures Theory (TMT) is introduced, in order to unify the early and …
usually called Two Measures Theory (TMT) is introduced, in order to unify the early and …
Light like segment compactification and braneworlds with dynamical string tension
EI Guendelman - The European Physical Journal C, 2021 - Springer
There is great interest in the construction of brane worlds, where matter and gravity are
forced to be effective only in a lower dimensional surface, the brane. How these could …
forced to be effective only in a lower dimensional surface, the brane. How these could …
Dark energy and dark matter unification from dynamical space time: observational constraints and cosmological implications
FK Anagnostopoulos, D Benisty… - … of Cosmology and …, 2019 - iopscience.iop.org
A recently proposed Dynamical Space-time Cosmology (DSC) that unifies dark energy and
dark matter is studied. The general action of this scenario includes a Lagrange multiplier …
dark matter is studied. The general action of this scenario includes a Lagrange multiplier …