https://doi.org/10.1140/epjc/s10052-021-08922-2
Regular Article – Theoretical Physics
Thermodynamics in new model of loop quantum cosmology
Department of Physics, South China University of Technology, 510641, Guangzhou, China
Received:
22
September
2020
Accepted:
26
January
2021
Published online:
3
February
2021
The thermodynamic properties of loop quantum cosmology (LQC) without considering the Lorentz term were established in Li and Zhu (Adv High Energy Phys 2009:905705, 2009). In this paper, we extend this result to the recent proposed new model of LQC with the Lorentz term. We investigate the thermodynamics of LQC on the apparent horizon of the Friedmann–Lematre–Robertson–Walker universe. The result shows that the effective density and effective pressure in the modified Friedmann equation of LQC not only determines the evolution of the universe but can also serve as the thermodynamic quantities. Moreover, with the help of the Misner–Sharp energy, the first law of thermodynamics of the LQC is still valid as expected. This in turn endows precise physical meaning to the effective matter density 
and the effective pressure 
.
© The Author(s) 2021
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