Contact
schliessen

Filtern

 

Bibliotheken

Logo der Bibliothek

Siegel TU Braunschweig Universitätsbibliothek Braunschweig
You do not seem to be within the network of Braunschweig University.
As student, researcher or staff member of Braunschweig University you can use the VPN service to gain access to electronic publications.
Alternatively, you can use your university username and password via Shibboleth to gain access to electronic publications with certain publishers. You can find more details in our Blog (in German).

Power-laws f(R) theories are cosmologically unacceptable

Luca Amendola, David Polarski, and Shinji Tsujikawa

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... Full description

Main Author: Amendola, Luca
Contributors: Polarski, David | Author
Tsujikawa, Shinji | Author
Published: 2007
Contained in: De.arxiv.org [S.l.] : Arxiv.org, 1991 (2007) Artikel-Nummer 0605384, 4 Seiten
Journal Title: De.arxiv.org
Fulltext access: Fulltext access (direct link - free access)
Availability is being checked...
Links: Volltext (arxiv.org)
Keywords: Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Language: English
Notes: Gesehen am 15.11.2017
Physical Description: 4
PPN (Catalogue-ID): 1565369343
more publication details ...

Associated Publications/Volumes

  • Associated records are being queried...
more (+)
Internes Format
LEADER 02894cab a2200517 4500
001 1565369343
003 DE-627
005 20180731121052.0
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 
040 |a DE-627  |b ger  |c DE-627  |e rda 
041 |a eng 
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 De.arxiv.org  |d [S.l.] : Arxiv.org, 1991  |g (2007) Artikel-Nummer 0605384, 4 Seiten  |h Online-Ressource  |w (DE-627)509006531  |w (DE-600)2225896-6  |w (DE-576)28130436X 
856 4 0 |u http://arxiv.org/abs/astro-ph/0605384  |x Verlag  |z Kostenfrei  |3 Volltext 
912 |a GBV_ILN_2013 
912 |a SYSFLAG_1 
912 |a GBV_KXP 
912 |a GBV_ILN_2403 
936 u w |j 2007  |g 4  |y (2007) Artikel-Nummer 0605384, 4 Seiten 
951 |a AR 
952 |j 2007  |g 4  |y (2007) Artikel-Nummer 0605384, 4 Seiten 
980 |2 2013  |1 01  |b 2987232055  |x 21654  |y l01  |z 15-11-17 
980 |2 2403  |1 01  |b 2989376585  |e n  |x 21403  |y l01  |z 07-12-17 
981 |2 2403  |1 01  |r http://arxiv.org/abs/astro-ph/0605384 
982 |2 2013  |1 01  |8 00  |a hdpub 
982 |2 2013  |1 01  |8 01  |0 (DE-601)1410508463  |a wissenschaftlicher Artikel (Zeitschrift) 
982 |2 2013  |1 01  |8 02  |a per_3 
982 |2 2013  |1 01  |8 03  |a s_4