Search arXivSearch

arXiv · 2508.11806

Ideal Fermi gas in the Dunkl formalism

Abstract

This paper investigates the thermodynamic properties of an ideal Fermi gas within the framework of the Dunkl formalism, which incorporates deformation effects through reflection symmetric differential operators. The formalism is applied to reformulate the creation and annihilation operators, leading to modified expressions for the fundamental thermodynamic quantities while preserving the underlying Fermi Dirac statistics. We derived modified expressions for the main thermodynamic quantities. In both the non degenerate and degenerate limits, we examined the effects of the Dunkl parameter on the internal energy, Helmholtz free energy, entropy, and heat capacity. Furthermore, we analyzed how the Dunkl deformation influences the isothermal compressibility, the average velocity of particles, and the Pauli paramagnetism.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

Djamel Eddine Zenkhri, Abdelhakim Benkrane. 2025-08-24. Ideal Fermi gas in the Dunkl formalism. https://arxiv.org/abs/2508.11806

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related papers

Ab initio path-integral Monte Carlo results for the one-particle spectral function of the warm dense electron gas

We present quasi-exact \emph{ab initio} path-integral Monte Carlo results for the Matsubara Green's function of the uniform electron gas (UEG) at finite temperature over a broad range of coupling strengths ($r_s=1,\dots,10)$. We further extract the static self-energy $Σ_\infty(p)$ and perform an analytic continuation for spectral function $A(p,ω)$, conclusively ruling out the possibility of distinct satellite features at these conditions. In addition, our work opens up intriguing avenues to study the single-particle spectrum and density of states of real warm dense matter systems based on first principles.

cond-mat.quant-gas

Non-Hermitian engineering of superfluidity in a Rashba spin-orbit-coupled Fermi gas

We investigate superfluid pairing in a two-dimensional Rashba spin-orbit-coupled Fermi gas subject to spin-selective one-body loss. Within the non-Hermitian mean-field framework, we self- consistently solve the gap and number equations and find that moderate dissipation can significantly enhance the pairing gap, resulting in a pronounced nonmonotonic dependence on the dissipation strength. Dissipation also provides an additional control parameter for driving the system across the BCS-BEC crossover. We further analyze the quasi-particle spectrum and identify two distinct superfluid regimes characterized by one and three exceptional rings, separated by an exceptional spectral transition. Interestingly, dissipation can enhance both pairing channels while simultaneously inducing a momentum-dependent phase twist in the triplet component. These results demonstrate that spin-selective dissipation provides a versatile non-Hermitian control knob for manipulating superfluid pairing, spectral structure, and crossover physics in spin-orbit-coupled quantum gases.

cond-mat.quant-gas

Quantum dynamics of spinful impurity in ideal Bose gas

We discuss the quench dynamics of an isolated system composed of a single spinful impurity in the transverse Rabi field and bath of non-interacting three- and two-dimensional bosons. Specifically, we consider the evolution of bosons and a spin-$\frac{1}{2}$ particle, initially prepared in a Bose-Einstein condensate state and a magnetic ground state, respectively, with the spin-dependent contact boson-impurity interaction switched on. Applying an original mean-field-like approximation, which naturally reflects the statistical effects of the bosonic bath, we calculate time-dependent components of the average impurity spin and the overlap of the wave function between initial and arbitrary time moments. A key prediction is a substantial speed-up in the decoherence (thermalization) dynamics of the spin degree of freedom compared to results obtained with the Chevy-like ansatz.

cond-mat.quant-gas