LAUSR

Spherical collapse, formation hysteresis and the deeply non-linear cosmological power spectrum

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0 Published in 2017 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stw2312

Abstract: I examine differences in non-linear structure formation between cosmological models that share a $z=0$ linear power spectrum in both shape and amplitude, but that differ via their growth history. $N$-body simulations of these models display… read more here.

Keywords: collapse; spherical collapse; non linear; formation ... See more keywords

Spherical collapse model in agegraphic dark energy cosmologies

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0 Published in 2017 at "Physical Review D"

DOI: 10.1103/physrevd.96.063519

Abstract: Under the commonly used spherical collapse model, we study how dark energy affects the growth of large scale structures of the Universe in the context of agegraphic dark energy models. The dynamics of the spherical… read more here.

Keywords: agegraphic dark; energy; spherical collapse; model ... See more keywords

Spherical collapse of fuzzy dark matter

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1 Published in 2019 at "Physical Review D"

DOI: 10.1103/physrevd.99.043540

Abstract: It has been postulated that Fuzzy Dark Matter (FDM) could be a viable alternative to Cold Dark Matter (CDM). FDM is comprised of ultra light bosons which exist as a Bose Einstein condensate. Due to… read more here.

Keywords: fuzzy dark; dark matter; fdm; spherical collapse ... See more keywords

Study of charged anisotropic spherical collapse in f() gravity

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2 Published in 2018 at "Modern Physics Letters A"

DOI: 10.1142/s0217732318501092

Abstract: This paper studies the gravitational collapse of charged anisotropic spherical stellar objects in f(????) gravity. For this purpose, we derive dynamical equations by considering Misner–Sharp mechanism... read more here.

Keywords: spherical collapse; charged anisotropic; anisotropic spherical; gravity ... See more keywords

Dynamics of spherical collapse in energy–momentum squared gravity

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0 Published in 2021 at "International Journal of Modern Physics A"

DOI: 10.1142/s0217751x21500044

Abstract: This paper investigates the dynamics of spherical collapse in the framework of energy–momentum squared gravity. This theory overcomes the big-bang singularity and provides viable cosmological conse... read more here.

Keywords: dynamics spherical; squared gravity; energy momentum; momentum squared ... See more keywords