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20 papers · 1 filter
Indestructibility of compact spaces
Rodrigo R. Dias, Franklin D. Tall
In this article we investigate which compact spaces remain compact under countably closed forcing. We prove that, assuming the Continuum Hypothesis, the natural generalizations to…
Tachyonic (phantom) power-law cosmology
Rachan Rangdee, Burin Gumjudpai
Tachyonic scalar field-driven late universe with dust matter content is considered. The cosmic expansion is modeled with power-law and phantom power-law expansion at late time, i.e…
Testing for dynamical dark energy models with redshift-space distortions
Shinji Tsujikawa, Antonio De Felice, Jailson Alcaniz
The red-shift space distortions in the galaxy power spectrum can be used to measure the growth rate of matter density perturbations delta_m. For dynamical dark energy models in Gen…
Observational Constraints on Quintessence: Thawing, Tracker, and Scaling models
Takeshi Chiba, Antonio De Felice, Shinji Tsujikawa
For two types of quintessence models having thawing and tracking properties, there exist analytic solutions for the dark energy equation of state w expressed in terms of several fr…
Constraining jet production scenarios by studies of Narrow-Line-Radio-Galaxies
Marek Sikora, Grażyna Stasińska, Dorota Kozieł-Wierzbowska +2
We study a large sample of narrow-line radio galaxies (NLRGs) with extended radio structures. Using 1.4 GHz radio luminosities, , narrow optical emission line luminosities…
Reheating in 3-form inflation
Antonio De Felice, Khamphee Karwan, Pitayuth Wongjun
We consider the 3-form field, which has been considered as a candidate for realizing inflation, coupled to a scalar field which models the relativistic matter particles produced du…