[PDF] Top 20 A Quantum Monte Carlo Study of Atomic Fermi Gas.

... of quantum Monte Carlo and atomic Fermi gas system, we study the two component atomic Fermi gas at unitary limit in the periodic box using variational ... See full document

... The Hamiltonian of the uniform electron gas is invariant under the simultaneous translation or rotation of the electron positions. However, our trial Wigner crystal wave functions break these symmetries and, for ... See full document

... Superfluids are known to exhibit, in addition to usual sound, an addi- tional mode, called second sound, where the superfluid and normal compo- nents move with opposite phase [Lan41]. In a weakly compressible fluid, like ... See full document

... noble gas atoms He, Ne, Ar, Kr, and Xe, which extends the range of atoms studied within VMC and DMC up to Z = ...to study the scaling of the computational cost with ... See full document

... a quantum bath has received a large attention in the field of ultracold atoms both theoretically and ...spin-polarized Fermi sea, is already a well studied topic with different interesting perspectives ... See full document

... Diffusion Monte Carlo methods have been used mainly in studying electronic systems where the particle interactions vary relatively slowly with ...using quantum Monte Carlo methods to ... See full document

... the Monte Carlo valence energy of the indicated species, and ZPE is the zero-point vibrational energy deter- mined by ...ECP Monte Carlo ...charged atomic species because it is more ... See full document

... Quantum Monte Carlo (QMC) methods have proved to be very useful for studies of many-body quantum ...electron gas [1] and unitary fermions [92] have become important references for other ... See full document

... In this chapter we study 2D dipolar fermions in a bilayer conguration, where the dipole moments are polarized perpendicular to the planes. We consider an extreme case of the population imbalance when the top layer ... See full document

... variational Monte Carlo method and the phenomeno- logical potential for the interaction between the nucleons, we can now turn to the computation of experimental ... See full document

... calculations, Quantum Monte Carlo methods (namely Green’s function Monte Carlo (GFMC) [15–17] and Auxiliary-Field Diffusion Monte carlo (AFDMC) [18]), did ...that ... See full document

... det determinant of a is returned here ealeOK returns false if the calculation is singular and true otherwise Definition at line 161 of file LU.cpp.. Calculates the inverse of a matrix us[r] ... See full document

... However, Monte Carlo simulations show [3] that the ground state continues to have long- range Néel order when S = 1/2, with the order parameter reduced to about 40% of its classical ...the quantum ... See full document

... lattice gas model in a mean- fi eld ...− Fermi equation 37 in which the correlation e ff ects are described by the fourth-order term and a Fermi-like ...the Fermi distribution in general (and ... See full document

... able the total energies of many-electron systems to be calcu- lated to very high accuracy. QMC simulations of condensed matter are usually performed using finite simulation cells subject to periodic boundary conditions. ... See full document

... direct Monte Carlo solution of the many-body Schr¨ odinger equa- ...here study systems of indistin- guishable fermions (hence require the fixed-node approximation), and, where nec- essary, subject to ... See full document

... The permeability of a Berea sandstone sample was calculated, in order to validate the permeabilities of the ablative materials. The value of 0.54 Darcys is in good agreement with published experimental data and is in ... See full document

... reported to enhance gas storage. [4] The shape, size and chemical environment of the pores within a MOF play significant roles in gas storage capacity, specificity and separations. [1d,5] The physical ... See full document

... To make our wavefunctions, we have used both Jaguar [5] and GAMESS-US [6], and we obtained our basis sets from the EMSL website [56, 57]. For this study, we have chosen two basis sets, which we label aug-tz, and ... See full document

... the trial wavefunction is accurate enough, this approximation is expected to give a very accurate energy. Generally, the fixed-node DMC energy is variational in the sense that it is less than or equal to the energy ... See full document