Thermodynamic characteristics of ideal quantum gases in harmonic potentials within exact and semiclassical approaches
نویسندگان
چکیده
We theoretically examine equilibrium properties of the harmonically trapped ideal Bose and Fermi gases in quantum degeneracy regime. analyze thermodynamic characteristics with a finite number atoms by means known semiclassical approach perform comparison exact numerical results. For gas, we demonstrate deviations energy values originating from discrete level structure show that these are observable only for small particles. observe characteristic softening phase transition features, which contrasts to predictions related approximations. provide more accurate methodology determining corrections critical temperature due
منابع مشابه
Ideal Quantum Gases
The indistinguishability of identical particles has profound effects at low temperatures and/or high density where quantum mechanical wave packets overlap appreciably. The occupation representation is used to study the statistical mechanics and thermodynamics of ideal quantum gases satisfying FermiDirac or Bose-Einstein statistics. This notebook concentrates on formal and conceptual development...
متن کاملThermodynamic equivalence of certain ideal Bose and Fermi gases
It has been established recently that there is an interesting thermodynamic ‘‘equivalence’’ between noninteracting Bose and spinless Fermi gases in two dimensions, and between onedimensional Bose and Fermi systems with linear dispersion, both in the grand-canonical ensemble. These are known to be special cases of a larger class of equivalences of noninteracting systems having an energy-independ...
متن کاملEigenvalue Statistics in Quantum Ideal Gases
The eigenvalue statistics of quantum ideal gases with single particle energies en = n α are studied. A recursion relation for the partition function allows to calculate the mean density of states from the asymptotic expansion for the single particle density. For integer α > 1 one expects and finds number theoretic degeneracies and deviations from the Poissonian spacing distribution. By semiclas...
متن کاملIdeal Quantum Gases in D-dimensional Space and Power-Law Potentials
We investigate ideal quantum gases in D-dimensional space and confined in a generic external potential by using the semiclassical approximation. In particular, we derive density of states, density profiles and critical temperatures for Fermions and Bosons trapped in isotropic power-law potentials. Form such results, one can easily obtain those of quantum gases in a rigid box and in a harmonic t...
متن کاملA Scaling Approach to Ideal Quantum Gases
In this article we present a derivation of the thermal equations of state of ideal quantum gases by using solely dimensional analysis, thermodynamic considerations and simple physical arguments. The thermodynamic relations of gases depend strongly on the energymomentum relation of the gas particles and on their spin, i.e., whether the particles are fermions or bosons. The energy-momentum relati...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physica D: Nonlinear Phenomena
سال: 2022
ISSN: ['1872-8022', '0167-2789']
DOI: https://doi.org/10.1016/j.physa.2021.126605