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gr-qc2026

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…

gr-qc2025

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…

gr-qc2025

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…

gr-qc2025

White Paper and Roadmap for Quantum Gravity Phenomenology in the Multi-Messenger Era

R. Alves Batista, G. Amelino-Camelia, D. Boncioli +101

The unification of quantum mechanics and general relativity has long been elusive. Only recently have empirical predictions of various possible theories of quantum gravity been put…

gr-qc2024

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…