Zobrazeno 1 - 10
of 171
pro vyhledávání: '"van zyl, B."'
Publikováno v:
J. Phys. A: Math. Theor. 57 395201 (2024)
The one-body density matrix (ODM) for a zero temperature non-interacting Fermi gas can be approximately obtained in the semiclassical regime through different $\hbar$-expansion techniques. One would expect that each method of approximating the ODM sh
Externí odkaz:
http://arxiv.org/abs/2402.02206
Publikováno v:
Phys. Rev. B 94, 075423 (2016)
The semiclassical $\hbar$-expansion of the one-particle density matrix for a two-dimensional Fermi gas is calculated within the Wigner transform method of Grammaticos and Voros, originally developed in the context of nuclear physics. The method of Gr
Externí odkaz:
http://arxiv.org/abs/1605.08014
Autor:
van Zyl, B. P., Ferguson, W.
Publikováno v:
Phys. Rev. A 93, 053626 (2016)
The liquid-to-ordered phase transition in a bilayer system of fermions is studied within the context of a recently proposed density-functional theory [Phys. Rev. A {\bf 92}, 023614 (2015)]. In each two-dimensional layer, the fermions interact via a r
Externí odkaz:
http://arxiv.org/abs/1604.02582
Publikováno v:
Phys. Rev. B 92, 075129 (2015)
In a recent paper [Phys.~Rev.~A {\bf 89}, 022503 (2014)], the average density approximation (ADA) was implemented to develop a parameter-free, nonlocal kinetic energy functional to be used in the orbital-free density-functional theory of an inhomogen
Externí odkaz:
http://arxiv.org/abs/1507.03118
Publikováno v:
Phys. Rev. A 92, 023614 (2015)
Density-functional theory is utilized to investigate the zero-temperature transition from a Fermi liquid to an inhomogeneous stripe, or Wigner crystal phase, predicted to occur in a one-component, spin-polarized, two-dimensional dipolar Fermi gas. Co
Externí odkaz:
http://arxiv.org/abs/1507.00870
Publikováno v:
Journal of Physics A: Mathematical & Theoretical; 9/27/2024, Vol. 57 Issue 39, p1-20, 20p
The collective excitations of a zero-temperature, spin-polarized, harmonically trapped, two-dimensional dipolar Fermi gas are examined within the Thomas-Fermi von Weizs\"acker hydrodynamic theory. We focus on repulsive interactions, and investigate t
Externí odkaz:
http://arxiv.org/abs/1407.2460
Publikováno v:
Phys. Rev. A {\bf 89}, 022503 (2013)
The average-density approximation is used to construct a nonlocal kinetic energy functional for an inhomogeneous two-dimensional Fermi gas. This functional is then used to formulate a Thomas-Fermi von Weizs\"acker-like theory for the description of t
Externí odkaz:
http://arxiv.org/abs/1311.5608
Autor:
van Zyl, B. P., Zaremba, E.
Motivated by the recent experiment of Hochgraefe et al., we have investigated the magnetoplasmon excitations in a periodic array of quantum wires with a periodic modulation along the wire direction. The equilibrium and dynamic properties of the syste
Externí odkaz:
http://arxiv.org/abs/cond-mat/0011138
We have investigated the magnetoplasmon excitations in arrays of circular and noncircular quantum dots within the Thomas-Fermi-Dirac-von Weizs\"acker approximation. Deviations from the ideal collective excitations of isolated parabolically confined e
Externí odkaz:
http://arxiv.org/abs/cond-mat/9908235