Reconstructing inflation and reheating in the framework of a generalized F (H) Friedmann equation
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DOI: 10.1088/1402-4896/adde90
Abstract: The reconstruction of an inflationary universe considering the parametrization of the scalar spectral index as a function of the number of e − folds in the framework of a modified Friedmann equation is analyzed. In… read more here.
Keywords: equation; hubble parameter; friedmann equation; inflation reheating ... See more keywords
Friedmann’s equation and the creation of the universe
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DOI: 10.1142/s0218271818470132
Abstract: In this paper, we present mathematical evidence that the beginning of the universe did not occur at the big bang at t = 0 with the universe in a state of infinite density, but occurred… read more here.
Keywords: equation creation; creation universe; friedmann equation;
Modified Jeans instability and Friedmann equation from generalized Maxwellian distribution
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DOI: 10.1515/astro-2024-0003
Abstract: Abstract We study Jeans instability with generalized Maxwellian distribution. The results reveal two significant features of the modified Jeans instability. First, the Jeans wavelength of the system covers the original λ J {\lambda }_{J} when… read more here.
Keywords: modified jeans; jeans instability; maxwellian distribution; generalized maxwellian ... See more keywords