Scaling solutions and weak gravity in dark energy with energy and momentum couplings
We argue that the ΛCDM tensions of the Hubble-Lemaȋtre expansion rate H0 and the clustering normalization σ8 can be eased, at least in principle, by considering an interaction between dark energy and dark matter in such a way to induce a small and positive early effective equation of state and a we...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article (Journal) |
| Language: | English |
| Published: |
9 June 2020
|
| In: |
Journal of cosmology and astroparticle physics
Year: 2020, Issue: 06 |
| ISSN: | 1475-7516 |
| DOI: | 10.1088/1475-7516/2020/06/020 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1088/1475-7516/2020/06/020
|
| Author Notes: | Luca Amendola and Shinji Tsujikawa |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1728486149 | ||
| 003 | DE-627 | ||
| 005 | 20220818185642.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 200901s2020 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1088/1475-7516/2020/06/020 |2 doi | |
| 035 | |a (DE-627)1728486149 | ||
| 035 | |a (DE-599)KXP1728486149 | ||
| 035 | |a (OCoLC)1341357983 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Amendola, Luca |d 1963- |e VerfasserIn |0 (DE-588)1029171270 |0 (DE-627)732547482 |0 (DE-576)377045128 |4 aut | |
| 245 | 1 | 0 | |a Scaling solutions and weak gravity in dark energy with energy and momentum couplings |c Luca Amendola and Shinji Tsujikawa |
| 264 | 1 | |c 9 June 2020 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Gesehen am 01.09.2020 | ||
| 520 | |a We argue that the ΛCDM tensions of the Hubble-Lemaȋtre expansion rate H0 and the clustering normalization σ8 can be eased, at least in principle, by considering an interaction between dark energy and dark matter in such a way to induce a small and positive early effective equation of state and a weaker gravity. For a dark energy scalar field ϕ interacting with dark matter through an exchange of both energy and momentum, we derive a general form of the Lagrangian allowing for the presence of scaling solutions. In a subclass of such interacting theories, we show the existence of a scaling ϕ-matter-dominated-era (ϕMDE) which can potentially alleviate the H0 tension by generating an effective high-redshift equation of state. We also study the evolution of perturbations for a model with ϕMDE followed by cosmic acceleration and find that the effective gravitational coupling relevant to the linear growth of large-scale structures can be smaller than the Newton gravitational constant G at low redshifts. The momentum exchange between dark energy and dark matter plays a crucial role for realizing weak gravity, while the energy transfer is also required for the existence of ϕMDE. | ||
| 700 | 1 | |a Tsujikawa, Shinji |e VerfasserIn |0 (DE-588)1029171491 |0 (DE-627)73254792X |0 (DE-576)377051799 |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Journal of cosmology and astroparticle physics |d London : IOP, 2003 |g (2020,6) Artikel-Nummer 020, 21 Seiten |h Online-Ressource |w (DE-627)361339771 |w (DE-600)2104147-7 |w (DE-576)106869809 |x 1475-7516 |7 nnas |a Scaling solutions and weak gravity in dark energy with energy and momentum couplings |
| 773 | 1 | 8 | |g year:2020 |g number:06 |a Scaling solutions and weak gravity in dark energy with energy and momentum couplings |
| 856 | 4 | 0 | |u https://doi.org/10.1088/1475-7516/2020/06/020 |x Verlag |x Resolving-System |z lizenzpflichtig |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20200901 | ||
| 993 | |a Article | ||
| 994 | |a 2020 | ||
| 998 | |g 1029171270 |a Amendola, Luca |m 1029171270:Amendola, Luca |d 130000 |d 130300 |e 130000PA1029171270 |e 130300PA1029171270 |k 0/130000/ |k 1/130000/130300/ |p 1 |x j | ||
| 999 | |a KXP-PPN1728486149 |e 374571833X | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"id":{"doi":["10.1088/1475-7516/2020/06/020"],"eki":["1728486149"]},"type":{"media":"Online-Ressource","bibl":"article-journal"},"relHost":[{"note":["Gesehen am 14.07.2021"],"disp":"Scaling solutions and weak gravity in dark energy with energy and momentum couplingsJournal of cosmology and astroparticle physics","corporate":[{"display":"Institute of Physics","role":"isb"},{"role":"isb","display":"Scuola Internazionale Superiore di Studi Avanzati"}],"language":["eng"],"title":[{"title_sort":"Journal of cosmology and astroparticle physics","subtitle":"JCAP ; an IOP and SISSA journal","title":"Journal of cosmology and astroparticle physics"}],"physDesc":[{"extent":"Online-Ressource"}],"titleAlt":[{"title":"JCAP"}],"recId":"361339771","origin":[{"dateIssuedDisp":"2003-","publisher":"IOP","dateIssuedKey":"2003","publisherPlace":"London"}],"part":{"year":"2020","text":"(2020,6) Artikel-Nummer 020, 21 Seiten","issue":"06"},"pubHistory":["Nachgewiesen 2003 -"],"id":{"eki":["361339771"],"zdb":["2104147-7"],"issn":["1475-7516"]},"type":{"bibl":"periodical","media":"Online-Ressource"}}],"title":[{"title":"Scaling solutions and weak gravity in dark energy with energy and momentum couplings","title_sort":"Scaling solutions and weak gravity in dark energy with energy and momentum couplings"}],"language":["eng"],"person":[{"given":"Luca","family":"Amendola","role":"aut","display":"Amendola, Luca"},{"display":"Tsujikawa, Shinji","role":"aut","family":"Tsujikawa","given":"Shinji"}],"origin":[{"dateIssuedDisp":"9 June 2020","dateIssuedKey":"2020"}],"recId":"1728486149","name":{"displayForm":["Luca Amendola and Shinji Tsujikawa"]},"note":["Gesehen am 01.09.2020"]} | ||
| SRT | |a AMENDOLALUSCALINGSOL9202 | ||