عنوان مجله
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INTERNATIONAL JOURNAL OF MODERN PHYSICS D
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چکیده
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We consider a Friedmann–Robertson–Walker (FRW) universe filled by a dark energy
(DE) candidate together with other possible sources which may include the baryonic and
nonbaryonic matters. Thereinafter, we consider a situation in which the cosmos sectors
do not interact with each other. By applying the unified first law of thermodynamics on
the apparent horizon of the FRW universe, we show that the DE candidate may modify
the apparent horizon entropy and thus the Bekenstein limit. Moreover, we generalize our
study to the models in which the cosmos sectors have a mutual interaction. Our final
result indicates that the mutual interaction between the cosmos sectors may add an
additional term to the apparent horizon entropy leading to modify the Bekenstein limit.
Relationships with previous works have been addressed throughout the paper. Finally,
we investigate the validity of the second law of thermodynamics and its generalized form
in the interacting and noninteracting cosmoses.
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