Momentum transfer models of interacting dark energy

Mark S. Linton; Robert Crittenden; Alkistis Pourtsidou

doi:10.1088/1475-7516/2022/08/075

Momentum transfer models of interacting dark energy

Mark S. Linton^*, Robert Crittenden^*, Alkistis Pourtsidou^*

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

We consider two models of interacting dark energy, both of which interact only through momentum exchange. One is a phenomenological one-parameter extension to wCDM, and the other is a coupled quintessence model described by a Lagrangian formalism. Using a variety of high and low redshift data sets, we perform a global fitting of cosmological parameters and compare to ΛCDM, uncoupled quintessence, and wCDM. We find that the models are competitive with ΛCDM, even obtaining a better fit when certain data sets are included.

Original language	English
Article number	075
Pages (from-to)	1-23
Number of pages	23
Journal	Journal of Cosmology and Astroparticle Physics (JCAP)
Volume	2022
Issue number	8
DOIs	https://doi.org/10.1088/1475-7516/2022/08/075
Publication status	Published - 31 Aug 2022

Keywords / Materials (for Non-textual outputs)

astro-ph.CO
cosmological parameters from CMBR
dark energy theory
dark matter theory

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10.1088/1475-7516/2022/08/075Licence: Creative Commons: Attribution (CC-BY)

Momentum_transfer_models_of_interacting_Dark_EnergyAccepted author manuscript, 3.43 MBLicence: Creative Commons: Attribution (CC-BY)
2107.03235v1

Exploring the Universe with radio and optical galaxy surveys
Pourtsidou, A. (Principal Investigator)
1/05/23 → 30/04/26
Project: Research

Cite this

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title = "Momentum transfer models of interacting dark energy",

abstract = "We consider two models of interacting dark energy, both of which interact only through momentum exchange. One is a phenomenological one-parameter extension to wCDM, and the other is a coupled quintessence model described by a Lagrangian formalism. Using a variety of high and low redshift data sets, we perform a global fitting of cosmological parameters and compare to ΛCDM, uncoupled quintessence, and wCDM. We find that the models are competitive with ΛCDM, even obtaining a better fit when certain data sets are included. ",

keywords = "astro-ph.CO, cosmological parameters from CMBR, dark energy theory, dark matter theory",

author = "Linton, {Mark S.} and Robert Crittenden and Alkistis Pourtsidou",

note = "22 pages, 10 figures, 3 tables Publisher Copyright: {\textcopyright} 2022 The Author(s)",

year = "2022",

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doi = "10.1088/1475-7516/2022/08/075",

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AU - Linton, Mark S.

AU - Crittenden, Robert

AU - Pourtsidou, Alkistis

PY - 2022/8/31

Y1 - 2022/8/31

N2 - We consider two models of interacting dark energy, both of which interact only through momentum exchange. One is a phenomenological one-parameter extension to wCDM, and the other is a coupled quintessence model described by a Lagrangian formalism. Using a variety of high and low redshift data sets, we perform a global fitting of cosmological parameters and compare to ΛCDM, uncoupled quintessence, and wCDM. We find that the models are competitive with ΛCDM, even obtaining a better fit when certain data sets are included.

AB - We consider two models of interacting dark energy, both of which interact only through momentum exchange. One is a phenomenological one-parameter extension to wCDM, and the other is a coupled quintessence model described by a Lagrangian formalism. Using a variety of high and low redshift data sets, we perform a global fitting of cosmological parameters and compare to ΛCDM, uncoupled quintessence, and wCDM. We find that the models are competitive with ΛCDM, even obtaining a better fit when certain data sets are included.

KW - astro-ph.CO

KW - cosmological parameters from CMBR

KW - dark energy theory

KW - dark matter theory

U2 - 10.1088/1475-7516/2022/08/075

DO - 10.1088/1475-7516/2022/08/075

M3 - Article

SN - 1475-7516

VL - 2022

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JO - Journal of Cosmology and Astroparticle Physics (JCAP)

JF - Journal of Cosmology and Astroparticle Physics (JCAP)

IS - 8

M1 - 075

ER -

Momentum transfer models of interacting dark energy

Abstract

Keywords / Materials (for Non-textual outputs)

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Exploring the Universe with radio and optical galaxy surveys

Cite this