Quantum origin of dark energy and the Hubble tension

Tom Prokopec; Enis Belgacem

doi:10.1016/j.physletb.2022.137174

Quantum origin of dark energy and the Hubble tension

Tom Prokopec, Enis Belgacem^*

^*Corresponding author for this work

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

Abstract

Local measurements of the Hubble parameter obtained from the distance ladder at low redshift are in tension with global values inferred from cosmological standard rulers. A key role in the tension is played by the assumptions on the cosmological history, in particular on the origin of dark energy. Here we consider a scenario where dark energy originates from the amplification of quantum fluctuations of a light field in inflation. We show that spatial correlations inherited from inflationary quantum fluctuations can reduce the Hubble tension down to one standard deviation, thus relieving the problem with respect to the standard cosmological model. Upcoming missions, like Euclid, will be able to test the predictions of models in this class.

Original language	English
Article number	137174
Pages (from-to)	1-8
Number of pages	8
Journal	Modern Physics Letters B
Volume	831
Early online date	16 May 2022
DOIs	https://doi.org/10.1016/j.physletb.2022.137174
Publication status	Published - 10 Aug 2022

Bibliographical note

Funding Information:
The authors are grateful to Tanja Hinderer and Elisa Chisari for useful comments. This work is part of the Delta ITP consortium, a program of the Netherlands Organisation for Scientific Research (NWO) that is funded by the Dutch Ministry of Education, Culture and Science ( OCW ) - NWO projectnumber 24.001.027 .

Publisher Copyright:
© 2022 The Author(s)

Access to Document

10.1016/j.physletb.2022.137174Licence: CC BY

1-s2.0-S0370269322003082-mainFinal published version, 408 KBLicence: CC BY

Cite this

@article{8f2d0ed5f2c54738a4cea20889876c0e,

title = "Quantum origin of dark energy and the Hubble tension",

abstract = "Local measurements of the Hubble parameter obtained from the distance ladder at low redshift are in tension with global values inferred from cosmological standard rulers. A key role in the tension is played by the assumptions on the cosmological history, in particular on the origin of dark energy. Here we consider a scenario where dark energy originates from the amplification of quantum fluctuations of a light field in inflation. We show that spatial correlations inherited from inflationary quantum fluctuations can reduce the Hubble tension down to one standard deviation, thus relieving the problem with respect to the standard cosmological model. Upcoming missions, like Euclid, will be able to test the predictions of models in this class.",

author = "Tom Prokopec and Enis Belgacem",

note = "Funding Information: The authors are grateful to Tanja Hinderer and Elisa Chisari for useful comments. This work is part of the Delta ITP consortium, a program of the Netherlands Organisation for Scientific Research (NWO) that is funded by the Dutch Ministry of Education, Culture and Science ( OCW ) - NWO projectnumber 24.001.027 . Publisher Copyright: {\textcopyright} 2022 The Author(s)",

year = "2022",

month = aug,

day = "10",

doi = "10.1016/j.physletb.2022.137174",

language = "English",

volume = "831",

pages = "1--8",

journal = "Modern Physics Letters B",

issn = "0217-9849",

publisher = "World Scientific",

}

TY - JOUR

T1 - Quantum origin of dark energy and the Hubble tension

AU - Prokopec, Tom

AU - Belgacem, Enis

N1 - Funding Information: The authors are grateful to Tanja Hinderer and Elisa Chisari for useful comments. This work is part of the Delta ITP consortium, a program of the Netherlands Organisation for Scientific Research (NWO) that is funded by the Dutch Ministry of Education, Culture and Science ( OCW ) - NWO projectnumber 24.001.027 . Publisher Copyright: © 2022 The Author(s)

PY - 2022/8/10

Y1 - 2022/8/10

N2 - Local measurements of the Hubble parameter obtained from the distance ladder at low redshift are in tension with global values inferred from cosmological standard rulers. A key role in the tension is played by the assumptions on the cosmological history, in particular on the origin of dark energy. Here we consider a scenario where dark energy originates from the amplification of quantum fluctuations of a light field in inflation. We show that spatial correlations inherited from inflationary quantum fluctuations can reduce the Hubble tension down to one standard deviation, thus relieving the problem with respect to the standard cosmological model. Upcoming missions, like Euclid, will be able to test the predictions of models in this class.

AB - Local measurements of the Hubble parameter obtained from the distance ladder at low redshift are in tension with global values inferred from cosmological standard rulers. A key role in the tension is played by the assumptions on the cosmological history, in particular on the origin of dark energy. Here we consider a scenario where dark energy originates from the amplification of quantum fluctuations of a light field in inflation. We show that spatial correlations inherited from inflationary quantum fluctuations can reduce the Hubble tension down to one standard deviation, thus relieving the problem with respect to the standard cosmological model. Upcoming missions, like Euclid, will be able to test the predictions of models in this class.

UR - http://www.scopus.com/inward/record.url?scp=85132393556&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2022.137174

DO - 10.1016/j.physletb.2022.137174

M3 - Article

SN - 0217-9849

VL - 831

SP - 1

EP - 8

JO - Modern Physics Letters B

JF - Modern Physics Letters B

M1 - 137174

ER -

Quantum origin of dark energy and the Hubble tension

Abstract

Bibliographical note

Access to Document

Other files and links

Fingerprint

Cite this