The correspondence of generalised entropic cosmology theory with F(T) and F(Q) modified gravity and gravitational waves
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Nojiri, Shin'ichi
[1
,2
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Odintsov, Sergei D.
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CSIC, ICE, Inst Space Sci, C Can Magrans S-N, Barcelona 08193, Spain
ICREA, Passeig Lluis Co 23, Barcelona 08010, SpainHigh Energy Accelerator Res Org KEK, Theory Ctr, Oho 1-1, Tsukuba, Ibaraki 3050801, Japan
Odintsov, Sergei D.
[3
,4
]
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[1] High Energy Accelerator Res Org KEK, Theory Ctr, Oho 1-1, Tsukuba, Ibaraki 3050801, Japan
[2] Nagoya Univ, Kobayashi Maskawa Inst Origin Particles & Universe, Nagoya 4648602, Japan
[3] CSIC, ICE, Inst Space Sci, C Can Magrans S-N, Barcelona 08193, Spain
[4] ICREA, Passeig Lluis Co 23, Barcelona 08010, Spain
We investigate the correspondence between modified gravity theories and general entropic cosmology theory. Such a theory is proposed by an analogy with Jacobson's work, where the Einstein equation was derived from the Bekenstein-Hawking entropy. We compare FLRW equations obtained in entropic gravity with those in modified gravity theories. It is found the correspondence of F(T) and F(Q) gravities and general entropic gravity. We regard the F(T) and F(Q) gravity theories as effective local theories corresponding to the entropic gravity theories and we investigate the gravitational waves. The obtained equation of the gravitational wave is identical to that in Einstein's gravity except that the gravitational coupling is modified by the functional form of the functions F(T) and F(Q). It is interesting that in the case of the Tsallis entropic cosmology, the gravitational coupling becomes small or large, which may suppress or enhance the emission of the gravitational wave.
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Sun Yat Sen Univ, Sch Phys, Xingang Rd, Guangzhou 510275, Guangdong, Peoples R ChinaSun Yat Sen Univ, Sch Phys, Xingang Rd, Guangzhou 510275, Guangdong, Peoples R China
Xu, Yixin
Li, Guangjie
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Sun Yat Sen Univ, Sch Phys, Xingang Rd, Guangzhou 510275, Guangdong, Peoples R China
Purdue Univ, Dept Phys & Astron, 525 Northwestern Ave, W Lafayette, IN 47907 USASun Yat Sen Univ, Sch Phys, Xingang Rd, Guangzhou 510275, Guangdong, Peoples R China
Li, Guangjie
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Harko, Tiberiu
Liang, Shi-Dong
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Sun Yat Sen Univ, Sch Phys, Xingang Rd, Guangzhou 510275, Guangdong, Peoples R China
State Key Lab Optoelect Mat & Technol, Guangzhou, Guangdong, Peoples R China
Guangdong Prov Key Lab Display Mat & Technol, Guangzhou, Guangdong, Peoples R ChinaSun Yat Sen Univ, Sch Phys, Xingang Rd, Guangzhou 510275, Guangdong, Peoples R China
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Univ Naples Federico II, Dept Phys E Pancini, Naples, Italy
Compl Univ Monte S Angelo, INFN Sez Napoli, Edificio G,Via Cinthia, I-80126 Naples, ItalyUniv Naples Federico II, Dept Phys E Pancini, Naples, Italy
Vernieri, Daniele
Capozziello, Salvatore
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Univ Naples Federico II, Dept Phys E Pancini, Naples, Italy
Compl Univ Monte S Angelo, INFN Sez Napoli, Edificio G,Via Cinthia, I-80126 Naples, Italy
Scuola Super Meridionale, Largo San Marcellino 10, I-80138 Naples, Italy
Tomsk State Pedag Univ, Ul Kievskaya 60, Tomsk 634061, RussiaUniv Naples Federico II, Dept Phys E Pancini, Naples, Italy