Thermodynamics of ideal gas at Planck scale with strong quantum gravity measurement

TL;DR

This paper explores the thermodynamics of an ideal gas at the Planck scale within a noncommutative space-time framework, revealing strong quantum gravity effects and a maximal length that influences energy spectra and thermodynamic properties.

Contribution

It introduces a novel noncommutative algebra describing space-time at the Planck scale, highlighting the implications of a maximal length on quantum and thermodynamic phenomena.

Findings

Energy spectrum is weakly proportional to standard quantum mechanics.

States exhibit properties similar to coherent states due to quantum fluctuations.

Maximal length induces logarithmic corrections in deformed parameters.

Abstract

More recently in [J. Phys. A: Math. Theor. 53, 115303 (2020)], we have introduced a set of noncommutative algebra that describes the space-time at the Planck scale. The interesting significant result we found is that the generalized uncertainty principle induced a maximal length of quantum gravity which has different physical implications to the one of generalized uncertainty principle with minimal length. The emergence of a maximal length in this theory revealed strong quantum gravitational effects at this scale and predicted the detection of gravity particles with low energies. To make evidence of these predictions, we study the dynamics of a free particle confined in an infinite square well potential in one dimension of this space. Since the effects of quantum gravity are strong in this space, we show that the energy spectrum of this system is weakly proportional to the ordinary one of quantum mechanics free of the theory of gravity. The states of this particle exhibit proprieties similar to the standard coherent states which are consequences of quantum fluctuation at this scale. Then, with the spectrum of this system at hand, we analyze the thermodynamic quantities within the canonical and microcanonical ensembles of an ideal gas made up of $N$ indistinguishable particles at the Planck scale. The results show a complete consistency between both statistical descriptions. Furthermore, a comparison with the results obtained in the context of minimal length scenarios and black hole theories indicates that the maximal length in this theory induces logarithmic corrections of deformed parameters which are consequences of a strong quantum gravitational effect.