437 citations
- Universidad Antonio NariñoCO10 papers
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- Heidelberg UniversityDE4 papers
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- Centre National de la Recherche ScientifiqueFR3 papers
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6 papers · 1 filter
Horndeski in motion
J. Bayron Orjuela-Quintana, Jose Beltrán Jiménez
We study a class of homogeneous but anisotropic cosmologies within the family of shift-symmetric Horndeski theories, where the scalar field features an inhomogeneous profile but it…
On a Matrix Ensemble for Arbitrary Complex Quantum Systems
William E. Salazar, Juan Diego Urbina, Javier Madroñero
We present a comprehensive analytical study of a variation of the eigenvector ensemble initially proposed by Deutsch for the foundations of the Eigenstate Thermalization Hypothesis…
Interpretable and physics-informed emulator for the linear matter power spectrum from machine learning
J. Bayron Orjuela-Quintana, Domenico Sapone, Savvas Nesseris
We present an interpretable emulator for the linear matter power spectrum (MPS) in the standard cosmological model CDM, constructed via a physics-informed symbolic regression fr…
Almost Orthogonal Arrays: Search Three Ways
Luis Martínez, María Merino, Juan Manuel Montoya +1
Orthogonal arrays play a fundamental role in many applications. However, constructing orthogonal arrays with the required parameters for an application usually is extremely difficu…
Comparison of two different integration methods for the (1+1)-Dimensional Schrödinger-Poisson Equation
Nico Schwersenz, Victor Loaiza, Tim Zimmermann +2
We compare two different numerical methods to integrate in time spatially delocalized initial densities using the Schrödinger-Poisson equation system as the evolution law. The basi…
Multifield curved solid: Early dark energy and perturbation instabilities
Juan P. Beltrán Almeida, Alejandro Guarnizo, Thiago S. Pereira +1
We introduce a multifield dark energy model with a nonflat field-space metric, in which one field is dynamical while the others have constant spatial gradients. The model is predic…