742 citations · 4.1k across the 231 of their papers we have counts for
14 papers · 2 filters
Unification of DE-DM from Diffusive Cosmology
David Benisty, Eduardo Guendelman, Zbigniew Haba
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 t…
Four-Dimensonal Gauss-Bonnet Gravity Without Gauss-Bonnet Coupling to Matter - Spherically Symmetric Solutions, Domain Walls and Spacetime Singularities
Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva
We discuss a new extended gravity model in ordinary spacetime dimensions, where an additional term in the action involving Gauss-Bonnet topological density is included withou…
Quadratic curvature theories formulated as Covariant Canonical Gauge theories of Gravity
David Benisty, Eduardo I. Guendelman, David Vasak +2
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 Ham…
Two scalar fields inflation from scale-invariant gravity with modified measure
David Benisty, Eduardo I. Guendelman
A new class of gravity-matter model defined with an independent non-Riemannian volume form is studied, in the second order formalism. The action has a global scale invariance symme…
Gauss-Bonnet Gravity in Without Gauss-Bonnet Coupling to Matter - Cosmological Implications
Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva
We propose a new model of Gauss-Bonnet gravity. To avoid the usual property of the integral over the standard Gauss-Bonnet scalar becoming a total derivative term, we e…
Energy transfer from space-time into matter and a bouncing inflation from Covariant Canonical Gauge theory of Gravity
David Benisty, David Vasak, Eduardo Guendelman +1
Cosmological solutions for covariant canonical gauge theories of gravity are presented. The underlying covariant canonical transformation framework invokes a dynamical space-time H…
Black holes, gravitational waves and fundamental physics: a roadmap
Leor Barack, Vitor Cardoso, Samaya Nissanke +203
The grand challenges of contemporary fundamental physics---dark matter, dark energy, vacuum energy, inflation and early universe cosmology, singularities and the hierarchy problem-…
A correspondence between and order formalism by a metricity constraint
David Benisty, Eduardo I. Guendelman
A way to obtain a correspondence between the first order and second order formalism is studied. By introducing a Lagrange multiplier coupled to the covariant derivative of the metr…
Inflation Compactification from Dynamical space time
David Benisty, Eduardo I. Guendelman
A mechanism of inflation from higher dimensions compactification is studied. An Early Universe capable of providing exponential growth for some dimensions and exponential contracti…
Confinement/Deconfinement and Gravity-Assisted Emergent Higgs Mechanism in Quintessential Cosmological Model
Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva
Motivated by the ideas of Jacob Bekenstein concerning gravity-assisted symmetry breaking, we consider a non-canonical model of f(R)=R+R^2 extended gravity coupled to neutral scalar…
Unified Dark Energy and Dark Matter from Dynamical Space Time
David Benisty, Eduardo I. Guendelman
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 as a Lagrange multiplier,…
Quintessence, Unified Dark Energy and Dark Matter, and Confinement/Deconfinement Mechanism
Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva
We describe a new type of generalized gravity-matter models where gravity couples in a non-conventional way to a scalar "inflaton" field, to a second scalar "darkon" f…
From Black Holes to Baby Universes: Exploring the Possibility of Creating a Cosmos in the Laboratory
S. Ansoldi, Z. Merali, E. I. Guendelman
We discuss the essential features of baby-universe production, starting from a description of black holes and wormholes, in terms of the causal structure of spacetime, and followin…
Linear potentials in galaxy halos by Asymmetric Wormholes
Sebastian Bahamonde, David Benisty, Eduardo I. Guendelman
A spherically symmetric space-time solution for a diffusive two measures theory is studied. An asymmetric wormhole geometry is obtained where the metric coefficients have a linear…