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Interacting diffusive unified dark energy and dark matter from scalar fields

- D. Benisty, E. Guendelman
- Physics
- 30 January 2017

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 independent volume… Expand

Quadratic curvature theories formulated as covariant canonical gauge theories of gravity

- D. Benisty, E. Guendelman, D. Vasak, J. Struckmeier, H. Stoecker
- Physics
- Physical Review D
- 27 September 2018

The Covariant Canonical Gauge theory of Gravity is generalized by including at the Lagrangian level all possible quadratic curvature invariants. In this approach, the covariant Hamiltonian principle… Expand

Dynamically generated inflation from non-Riemannian volume forms

- D. Benisty, E. Guendelman, E. Nissimov, S. Pacheva
- Physics
- The European Physical Journal C
- 16 June 2019

We propose a simple modified gravity model without any initial matter fields in terms of several alternative non-Riemannian spacetime volume elements within the metric (second order) formalism. We… Expand

Unified dark energy and dark matter from dynamical spacetime

- D. Benisty, E. Guendelman
- Physics
- Physical Review D
- 22 February 2018

A unification of dark matter and dark energy based on a dynamical space time theory is suggested. By introducing a dynamical space time vector field $\chi_\mu$ as a Lagrange multiplier, a… Expand

The scale factor potential approach to inflation

- D. Benisty, E. Guendelman, E. Saridakis
- Physics
- 4 September 2019

We propose a new approach to investigate inflation in a model-independent way, and in particular to elaborate the involved observables, through the introduction of the “scale factor potential”.… Expand

Unified DE-DM with diffusive interactions scenario from scalar fields

- D. Benisty, E. Guendelman
- Physics
- 3 November 2017

Generalized models of unified dark matter (DM) and dark energy (DE) in the context of Two Measure Theories and of dynamical spacetime theories are obtained. In Two Measure Theories, one uses metric… Expand

Unification of dark energy and dark matter from diffusive cosmology

- D. Benisty, E. Guendelman, Z. Haba
- Physics
- Physical Review D
- 18 June 2019

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 theories are… Expand

Dark energy and dark matter unification from dynamical space time: observational constraints and cosmological implications

- Fotios Anagnostopoulos, D. Benisty, S. Basilakos, E. Guendelman
- Physics
- Journal of Cosmology and Astroparticle Physics
- 11 April 2019

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, which is coupled to… Expand

Quintessential inflation from Lorentzian slow roll

- D. Benisty, E. Guendelman
- Physics
- 1 June 2020

From the assumption that the slow-roll parameter $$\varepsilon $$ ε has a Lorentzian form as a function of the e-fold number N , a successful model of a quintessential inflation is obtained, as… Expand

Dynamically Generated Inflationary ΛCDM

- D. Benisty, E. Guendelman, E. Nissimov, S. Pacheva
- Computer Science, Physics
- Symmetry
- 10 February 2020

Our primary objective is to construct a plausible, unified model of inflation, dark energy and dark matter from a fundamental Lagrangian action first principle, wherein all fundamental ingredients… Expand

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