742 citations · 4.1k across the 231 of their papers we have counts for
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Metric-Independent Spacetime Volume-Forms and Dark Energy/Dark Matter Unification
Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva
The method of non-Riemannian (metric-independent) spacetime volume-forms (alternative generally-covariant integration measure densities) is applied to construct a modified model of…
Kruskal-Penrose Formalism for Lightlike Thin-Shell Wormholes
Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva +1
The original formulation of the "Einstein-Rosen bridge" in the classic paper of Einstein and Rosen (1935) is historically the first example of a static spherically-symmetric wormho…
Curvaton reheating in a Scale Invariant Two Measures Theory
Eduardo I. Guendelman, Ramon Herrera
The curvaton reheating mechanism in a Scale Invariant Two Measures Theory defined in terms of two independent non-Riemannian volume forms (alternative generally covariant integrati…
Unified Dark Energy and Dust Dark Matter Dual to Quadratic Purely Kinetic K-Essence
Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva
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…
On some topological deformation of stationary spacetimes
Arka Prabha Banik, Eduardo Guendelman
We define a completely new space-time starting from the well known Schwarzschild Space time by defining a new polar angle and then redefining the periodicity: instead o…
Dark Energy and Dark Matter From Hidden Symmetry of Gravity Model with a Non-Riemannian Volume Form
Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva
We show that dark energy and dark matter can be described simultaneously by ordinary Einstein gravity interacting with a single scalar field provided the scalar field Lagrangian co…
Cosmology via Metric-Independent Volume-Form Dynamics
Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva
The method of non-Riemannian volume-forms (metric-independent covariant integration measure densities on the spacetime manifold) is applied to construct a unified model of dynamica…
Classically and Quantum stable Emergent Universe from Conservation Laws
Sergio del Campo, Eduardo I. Guendelman, Ramon Herrera +1
It has been recently pointed out by Mithani-Vilenkin that certain emergent universe scenarios which are classically stable are nevertheless unstable semiclassically to collapse. He…
Vacuum Structure and Gravitational Bags Produced by Metric-Independent Spacetime Volume-Form Dynamics
Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva
We propose a new class of gravity-matter-gauge theories in terms of two different non-Riemannian volume-forms independent of the Riemannian metric. The nonlinear gauge field system…
Metric-Independent Volume-Forms in Gravity and Cosmology
Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva
Employing alternative spacetime volume-forms (generally-covariant integration measure densities) independent of the pertinent Riemannian spacetime metric have profound impact in ge…
The Schwarzschild metric and the Friedmann equations from Newtonian Gravitational collapse
Eduardo I. Guendelman, Arka Prabha Banik, Gilad Granit +2
As is well known, the 0 - 0 component of the Schwarzschild space can be obtained by the requirement that the geodesic of slowly moving particles match the Newtonian equation. Given…
Schwarzschild and Friedmann Lemaître Robertson Walker metrics from Newtonian Gravitational collapse
Eduardo I. Guendelman, Arka Prabha Banik, Gilad Granit +2
As it is well known, the component of the Schwarzschild space can be obtained by the requirement that the geodesic of slowly moving particles match the Newtonian equation. Gi…