Abstract
In this work, we have considered that the flat FRW universe is filled with the mixture of dark matter and the new holographic dark energy. If there is an interaction, we have investigated the natures of deceleration parameter, statefinder and Om diagnostics. We have examined the validity of the first and generalized second laws of thermodynamics under these interactions on the event as well as apparent horizon. It has been observed that the first law is violated on the event horizon. However, the generalized second law is valid throughout the evolution of the universe enveloped by the apparent horizon. When the event horizon is considered as the enveloping horizon, the generalized second law is found to break down excepting at late stage of the universe.
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Acknowledgements
The authors sincerely acknowledge the constructive suggestions made by the anonymous reviewer to enhance the quality of the paper. Both of the authors are thankful to IUCAA, Pune, India for providing facilities to carry out their research work under Visitor Associateship Programme under which the work was carried out. Also, the first author (U.D.) is thankful to CSIR, Govt. of India for providing research project grant (No. 03(1206)/12/EMR-II).
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Debnath, U., Chattopadhyay, S. Statefinder and Om Diagnostics for Interacting New Holographic Dark Energy Model and Generalized Second Law of Thermodynamics. Int J Theor Phys 52, 1250–1264 (2013). https://doi.org/10.1007/s10773-012-1440-z
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DOI: https://doi.org/10.1007/s10773-012-1440-z