Mass density vs. energy density at cosmological scales

Maxim Eingorn; Ezgi Yilmaz; A. Emrah Yükselci; Alexander Zhuk

doi:10.1016/j.physletb.2024.138564

Mass density vs. energy density at cosmological scales

Maxim Eingorn^*, Ezgi Yilmaz, A. Emrah Yükselci, Alexander Zhuk

^*Corresponding author for this work

Department of Physics Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

In 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.

Original language	English
Article number	138564
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	851
DOIs	https://doi.org/10.1016/j.physletb.2024.138564
Publication status	Published - Apr 2024

Bibliographical note

Publisher Copyright:
© 2024 The Authors

Keywords

Cosmic screening
Cosmological perturbations
Inhomogeneous Universe
Large-scale structure
N-body simulations
Power spectrum

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10.1016/j.physletb.2024.138564

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title = "Mass density vs. energy density at cosmological scales",

abstract = "In 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.",

keywords = "Cosmic screening, Cosmological perturbations, Inhomogeneous Universe, Large-scale structure, N-body simulations, Power spectrum",

author = "Maxim Eingorn and Ezgi Yilmaz and {Emrah Y{\"u}kselci}, A. and Alexander Zhuk",

note = "Publisher Copyright: {\textcopyright} 2024 The Authors",

year = "2024",

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doi = "10.1016/j.physletb.2024.138564",

language = "English",

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T1 - Mass density vs. energy density at cosmological scales

AU - Eingorn, Maxim

AU - Yilmaz, Ezgi

AU - Emrah Yükselci, A.

AU - Zhuk, Alexander

PY - 2024/4

Y1 - 2024/4

N2 - In 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.

AB - In 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.

KW - Cosmic screening

KW - Cosmological perturbations

KW - Inhomogeneous Universe

KW - Large-scale structure

KW - N-body simulations

KW - Power spectrum

UR - http://www.scopus.com/inward/record.url?scp=85188720439&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2024.138564

DO - 10.1016/j.physletb.2024.138564

M3 - Article

AN - SCOPUS:85188720439

SN - 0370-2693

VL - 851

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 138564

ER -

Mass density vs. energy density at cosmological scales

Abstract

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Keywords

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