Power-laws f(R) theories are cosmologically unacceptable
In a recent paper [1] (PRL 98,131302,2007) we have shown that f(R)=R + mu R^{n} modified gravity dark energy models are not cosmologically viable because during the matter era that precedes the accelerated stage the cosmic expansion is given by a sim t^{1/2} rather than a sim t^{2/3}, where a is a s...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article (Journal) Chapter/Article |
| Language: | English |
| Published: |
2007
|
| In: |
Arxiv
|
| Online Access: | Verlag, kostenfrei, Volltext: http://arxiv.org/abs/astro-ph/0605384
|
| Author Notes: | Luca Amendola, David Polarski, and Shinji Tsujikawa |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1565369343 | ||
| 003 | DE-627 | ||
| 005 | 20220814022658.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 171115s2007 xx |||||o 00| ||eng c | ||
| 035 | |a (DE-627)1565369343 | ||
| 035 | |a (DE-576)495369349 | ||
| 035 | |a (DE-599)BSZ495369349 | ||
| 035 | |a (OCoLC)1340982150 | ||
| 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 Power-laws f(R) theories are cosmologically unacceptable |c Luca Amendola, David Polarski, and Shinji Tsujikawa |
| 264 | 1 | |c 2007 | |
| 300 | |a 4 | ||
| 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 15.11.2017 | ||
| 520 | |a In a recent paper [1] (PRL 98,131302,2007) we have shown that f(R)=R + mu R^{n} modified gravity dark energy models are not cosmologically viable because during the matter era that precedes the accelerated stage the cosmic expansion is given by a sim t^{1/2} rather than a sim t^{2/3}, where a is a scale factor and t is the cosmic time. A recent work [2] (PLB 639,135-143,2006) by Capozziello et al. criticised our results presenting some apparent counter-examples to our claim in f(R)= mu R^{n} models. We show here that those particular R^{n} models can produce an expansion as a sim t^{2/3} but this does not connect to a late-time acceleration. Hence, though acceptable f(R) dark energy models may exist, the R^{n} models presented in Capozziello et al. are not cosmologically viable, confirming our previous results in Ref. [1]. | ||
| 650 | 4 | |a High Energy Physics - Phenomenology | |
| 650 | 4 | |a High Energy Physics - Theory | |
| 650 | 4 | |a General Relativity and Quantum Cosmology | |
| 650 | 4 | |a Astrophysics | |
| 700 | 1 | |a Polarski, David |e VerfasserIn |4 aut | |
| 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 Arxiv |d Ithaca, NY : Cornell University, 1991 |g (2007) Artikel-Nummer 0605384, 4 Seiten |h Online-Ressource |w (DE-627)509006531 |w (DE-600)2225896-6 |w (DE-576)28130436X |7 nnas |a Power-laws f(R) theories are cosmologically unacceptable |
| 773 | 1 | 8 | |g year:2007 |g extent:4 |a Power-laws f(R) theories are cosmologically unacceptable |
| 856 | 4 | 0 | |u http://arxiv.org/abs/astro-ph/0605384 |x Verlag |z kostenfrei |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20171115 | ||
| 993 | |a Article | ||
| 998 | |g 1029171270 |a Amendola, Luca |m 1029171270:Amendola, Luca |p 1 |x j | ||
| 999 | |a KXP-PPN1565369343 |e 2987232055 | ||
| BIB | |a Y | ||
| JSO | |a {"note":["Gesehen am 15.11.2017"],"type":{"media":"Online-Ressource","bibl":"chapter"},"language":["eng"],"recId":"1565369343","title":[{"title_sort":"Power-laws f(R) theories are cosmologically unacceptable","title":"Power-laws f(R) theories are cosmologically unacceptable"}],"person":[{"display":"Amendola, Luca","roleDisplay":"VerfasserIn","role":"aut","family":"Amendola","given":"Luca"},{"role":"aut","roleDisplay":"VerfasserIn","display":"Polarski, David","given":"David","family":"Polarski"},{"role":"aut","roleDisplay":"VerfasserIn","display":"Tsujikawa, Shinji","given":"Shinji","family":"Tsujikawa"}],"physDesc":[{"extent":"4 S."}],"relHost":[{"origin":[{"dateIssuedDisp":"1991-","publisher":"Cornell University ; Arxiv.org","dateIssuedKey":"1991","publisherPlace":"Ithaca, NY ; [Erscheinungsort nicht ermittelbar]"}],"id":{"zdb":["2225896-6"],"eki":["509006531"]},"physDesc":[{"extent":"Online-Ressource"}],"title":[{"title":"Arxiv","title_sort":"Arxiv"}],"disp":"Power-laws f(R) theories are cosmologically unacceptableArxiv","type":{"bibl":"edited-book","media":"Online-Ressource"},"note":["Gesehen am 28.05.2024"],"language":["eng"],"recId":"509006531","pubHistory":["1991 -"],"part":{"year":"2007","text":"(2007) Artikel-Nummer 0605384, 4 Seiten","extent":"4"},"titleAlt":[{"title":"Arxiv.org"},{"title":"Arxiv.org e-print archive"},{"title":"Arxiv e-print archive"},{"title":"De.arxiv.org"}]}],"origin":[{"dateIssuedKey":"2007","dateIssuedDisp":"2007"}],"id":{"eki":["1565369343"]},"name":{"displayForm":["Luca Amendola, David Polarski, and Shinji Tsujikawa"]}} | ||
| SRT | |a AMENDOLALUPOWERLAWSF2007 | ||