Would an alternative gravity theory developed from an improved gravitational action approach includes negative kinetic energy dynamic degrees of freedom?

Binbay, Veysel; Binbay, Fatma Figen

Would an alternative gravity theory developed from an improved gravitational action approach includes negative kinetic energy dynamic degrees of freedom?

dc.authorid	207135	en_US
dc.authorid	0000-0002-1018-5438	en_US
dc.authorid	0000-0002-1390-4151	en_US
dc.contributor.author	Binbay, Veysel
dc.contributor.author	Binbay, Fatma Figen
dc.date.accessioned	2020-03-31T19:15:17Z
dc.date.available	2020-03-31T19:15:17Z
dc.date.issued	2018
dc.department	Department of Physics, Faculty of Science, Dicle University	en_US
dc.description.abstract	The observed unexpected accelerating expansion of the universe, by Riess and his collaborators in 1998, has become one of the most important problems of the contemporary physics. A considerable effort has been spent by theoretical physicists to explain this observation for a while. When one looks at these attempts more closely, two of approaches attract attention: (i) Multi-dimensional alternative gravity models, (ii) Approaches which takes the more general and complex action than it is original Einstein-Hilbert form, which had been given as Ricci scalar R. The second type of these approaches must be examined carefully, because they could be generically involved dynamical degrees of freedom which possess negative kinetic energy (shortly called as ‘ghost states’ or simply ‘ghosts’). In this work, an alternative theory has been studied to understand if it contains ghosts or not. This alternative approach belongs to the second type of the approaches which mentioned above, and it is given as: where . And this model has been examined by this way to see if this specific alternative model could be used to explain the present time acceleration of the universe or not.	en_US
dc.identifier.citation	Binbay, V. ve Binbay, F.F. (2018). Would an alternative gravity theory developed from an improved gravitational action approach includes negative kinetic energy dynamic degrees of freedom? Results in Physics, 10(September), 145-149.	en_US
dc.identifier.doi	10.1016/j.rinp.2018.05.021
dc.identifier.endpage	149	en_US
dc.identifier.issn	2211-3797
dc.identifier.issue	September	en_US
dc.identifier.scopus	2-s2.0-85047834735
dc.identifier.scopusquality	Q1
dc.identifier.startpage	145	en_US
dc.identifier.uri	https://hdl.handle.net/11468/5155
dc.identifier.uri	https://reader.elsevier.com/reader/sd/pii/S2211379718306740?token=94D2EFE3553EB297BEF775B3AC22A63B794E99E333C6931A9F61746FF644B722C53ED038BF73371C8CC59A52B6AA620F
dc.identifier.volume	10	en_US
dc.identifier.wos	WOS:000443868900021
dc.identifier.wosquality	Q1
dc.indekslendigikaynak	Web of Science
dc.indekslendigikaynak	Scopus
dc.institutionauthor	0-Belirlenecek
dc.language.iso	en	en_US
dc.publisher	Elsevier	en_US
dc.relation.ispartof	Results in Physics
dc.relation.publicationcategory	Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı	en_US
dc.rights	info:eu-repo/semantics/openAccess	*
dc.subject	General relativity	en_US
dc.subject	Alternative models	en_US
dc.subject	Ghost states	en_US
dc.title	Would an alternative gravity theory developed from an improved gravitational action approach includes negative kinetic energy dynamic degrees of freedom?	en_US
dc.title	Would an alternative gravity theory developed from an improved gravitational action approach includes negative kinetic energy dynamic degrees of freedom?
dc.type	Article	en_US