180 citations
- Universidad de Buenos AiresAR27 papers
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- Consejo Nacional de Investigaciones Científicas y TécnicasAR22 papers
- Balseiro InstituteAR21 papers
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- Fundación Ciencias Exactas y NaturalesAR9 papers
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9 papers · 1 filter
Dark Matter Clumps as Sources of Gravitational-Wave Glitches in LIGO/Virgo/KAGRA data
Ezequiel Alvarez, Scott Perkins, Federico Ravanedo +1
We consider the hypothetical possibility that non-stationary glitch features in the noise of ground-based gravitational-wave detectors could be produced by small dark matter clumps…
Conformal compactification and affine-null metric formulation of the Einstein equations
Thomas Mädler, Emanuel Gallo
In principle, global properties of solution of Einstein equations need to be addressed using the conformal Einstein equations, because this conformal compactification allows a clea…
Testing f(R)-gravity models with DESI DR2 2025-BAO and other cosmological data
Francisco Plaza, Lucila Kraiselburd
Motivated by the new BAO data and the significant results recently published by the DESI DR2 Collaboration, this study presents a Markov Chain Monte Carlo (MCMC) analysis of all cu…
Exact results in a punctured neighborhood of a strong curvature singularity
Franco Fiorini, Juan Manuel Paez
By constructing a model of spacetime having a strong curvature singularity in which causal geodesics are complete, but more generic causal curves are not, we explicitly show that s…
Present accelerated expansion of the universe from new Weyl-Integrable gravity approach
Ricardo Aguila, José Edgar Madriz Aguilar, Claudia Moreno +1
We investigate if a recently introduced formulation of general relativity on a Weyl-integrable geometry, contains cosmological solutions exhibiting acceleration in the present cosm…
Stochastic emergence of inflaton fluctuations in a SdS primordial universe with large-scale repulsive gravity from a 5D vacuum
Luz Marina Reyes, Jose Edgar Madriz Aguilar, Mauricio Bellini
We develop a stochastic approach to study scalar field fluctuations of the inflaton field in an early inflationary universe with a black-hole (BH), which is described by an effecti…