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Flat FRW Cosmologies with Adiabatic Matter Creation: Kinematic tests

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arxiv astro-ph/9902337 v1 pith:6IE6G3AL submitted 1999-02-24 astro-ph

J. A. S. Lima , J. S. Alcaniz (Universidade Federal do Rio Grande do Norte , Natal , RN , Brazil) This is my paper
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Some observational consequences of a cosmological scenario driven by adiabatic matter creation are investigated. Exact expressions for the lookback time, age of the universe, luminosity distance, angular diameter, and galaxy number counts redshift relations are derived and their meaning discussed in detail. The expressions of the conventional FRW models are significantly modified and provide a powerful method to limit the parameters of the models.

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  1. Investigating $f(R)$-Inflation: background evolution and constraints

    astro-ph.CO 2025-07 conditional novelty 4.0 of 10

    A Jordan-frame f(R) model with particle creation during inflation is fitted to DESI and Pantheon+ data, yielding H0=71.04 and a claimed reduction of the Hubble tension to about 1.6-2.8 sigma.

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