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Publication:
Mass density vs. energy density at cosmological scales

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dc.contributor.authorEingorn, Maxim
dc.contributor.authorYilmaz, Ezgi
dc.contributor.authorEmrah Yükselci, A.
dc.contributor.authorZhuk, Alexander
dc.contributor.departmentFizik Mühendisliği Bölümü
dc.contributor.ituauthorYükselci, Ahmet Emrah
dc.date.accessioned2026-01-26T07:43:21Z
dc.date.issued2024-04-01
dc.description.abstractIn the presence of the gravitational field, the energy density of matter no longer coincides with its mass density. A discrepancy exists, of course, also between the associated power spectra. Within the $Λ$CDM model, we derive a formula that relates the power spectrum of the energy density to that of the mass density and test it with the help of N-body simulations run in comoving boxes of 2.816 Gpc/$h$. The results confirm the validity of the derived formula and simultaneously show that the power spectra diverge significantly from one another at large cosmological scales.
dc.description.abstract11 pages, 4 figures; matches the published version in Physics Letters B
dc.description.urihttps://doi.org/10.1016/j.physletb.2024.138564
dc.description.urihttps://dx.doi.org/10.48550/arxiv.2309.02989
dc.description.urihttp://arxiv.org/abs/2309.02989
dc.description.urihttps://zbmath.org/7850639
dc.description.urihttps://doaj.org/article/872f4c2452524cabbc978a19a43af9e4
dc.description.urihttps://www.hzdr.de/publications/Publ-37510-1
dc.description.urihttps://aperta.ulakbim.gov.tr/record/275211
dc.identifier.doi10.1016/j.physletb.2024.138564
dc.identifier.issn0370-2693
dc.identifier.openairedoi_dedup___::f8f5df1cd32f829462626ca6057253f4
dc.identifier.orcid0000-0002-9453-5991
dc.identifier.orcid0000-0003-4554-1268
dc.identifier.startpage138564
dc.identifier.urihttps://hdl.handle.net/11527/64014
dc.identifier.volume851
dc.language.isoeng
dc.publisherElsevier BV
dc.relation.ispartofPhysics Letters B
dc.rightsOPEN
dc.subjectcosmological perturbations
dc.subjectcosmic screening
dc.subjectCosmology and Nongalactic Astrophysics (astro-ph.CO)
dc.subjectPhysics
dc.subjectQC1-999
dc.subject\(N\)-body simulations
dc.subjectFOS: Physical sciences
dc.subjectEquations of motion in general relativity and gravitational theory
dc.subjectGeneral Relativity and Quantum Cosmology (gr-qc)
dc.subjectpower spectrum
dc.subjectlarge-scale structure
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectLarge-scale structure
dc.subjectPower spectrum
dc.subjectAstrophysical cosmology
dc.subjectinhomogeneous universe
dc.subjectinhomogeneous Universe
dc.subjectN-body simulations
dc.subjectInhomogeneous Universe
dc.subjectCosmic screening
dc.subjectGalactic and stellar dynamics
dc.subjectCosmological perturbations
dc.subjectRelativistic cosmology
dc.subjectAstrophysics - Cosmology and Nongalactic Astrophysics
dc.titleMass density vs. energy density at cosmological scales
dc.typeArticle
dspace.entity.typePublication

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