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Regular black holes from dynamical-tension string hedgehogs
Sebastian Bahamonde, Eduardo I. Guendelman
A spherical cloud of radial strings with non-zero constant tension has an energy density proportional to and therefore produces a singular conical geometry rather than an…
Creation of an inflationary epoch from an Emergent Universe through quantum tunneling
Eduardo I. Guendelman, Ramon Herrera, Pedro Labraña
We consider that the very early Universe was well described by an Emergent Universe, whose geometry was that of a static and classically stable Einstein Universe, which is possible…
Connecting Early Dark Energy to Late Dark Energy by the Diluting Matter Potential
Eduardo I. Guendelman, Ramon Herrera, Pedro Labrana
In this work we study a scale invariant gravity theory containing two scalar fields, dust particles and a measure defined from degrees of freedom independent of the metric. The int…
Exploring Cosmological Implications of the Modified Raychaudhuri Equation in Non-Gravitating Vacuum Energy Theory
Arijit Panda, Eduardo Guendelman, Goutam Manna
This article investigates the modified Raychaudhuri Equation (RE) in the context of Non-Gravitating Vacuum Energy (NGVE) theory and its implications for various cosmological charac…
Unifying Inflation, dark energy and dark matter with a scalar field and exotic fermions
Eduardo Guendelman, Ramon Herrera
In this paper we consider a new approach to unify inflation and the late universe with dark energy and dark matter formulated in a model that includes a non-Riemannian metric indep…
Square-Root Gauge Theory and Modified Gravity -- Gravity-Assisted Confinement/Deconfinement and Emergent Electro-Weak Symmetry Breaking in Cosmology
Eduardo Guendelman, Emil Nissimov, Svetlana Pacheva
In the present contribution to the proceedings of MG17, the main aim is to elucidate the physically important effects of a special nonlinear gauge field with a square-root of the s…