scholarly journals Diffusion Monte Carlo study of circular quantum dots

2000 ◽  
Vol 62 (12) ◽  
pp. 8120-8125 ◽  
Author(s):  
Francesco Pederiva ◽  
C. J. Umrigar ◽  
E. Lipparini
Keyword(s):  
Quantum Dots ◽  
Monte Carlo ◽  
Monte Carlo Study ◽  
Diffusion Monte Carlo

DIFFUSION MONTE CARLO STUDY OF GROUND STATE PROPERTIES OF QUANTUM DOTS

2001 ◽  
Vol 15 (10n11) ◽  
pp. 1443-1446 ◽  
Author(s):  
FRANCESCO PEDERIVA
Keyword(s):  
Quantum Dots ◽  
Monte Carlo ◽  
Ground State ◽  
Monte Carlo Study ◽  
Wave Functions ◽  
Local Spin Density Approximation ◽  
Density Approximation ◽  
Diffusion Monte Carlo ◽  
Hartree Fock ◽  
Parabolic Quantum Dot

We present the results of Diffusion Monte Carlo (DMC) calculations based on accurate multiconfiguration wave functions for N electrons (N≤13) confined to a parabolic quantum dot. The density and correlation energies have been computed and compared with the predictions of local spin density approximation theory (LSDA). We also computed the addition energy a function of the number of electrons in the dot, and compared them with the results of LSDA and Hartree Fock calculations. DMC results show a behavior qualitatively closer to the result of recent capacitance experiments.

scholarly journals THERMODYNAMIC PROPERTIES OF A TRAPPED BOSE GAS: A DIFFUSION MONTE CARLO STUDY

2008 ◽  
Vol 22 (24) ◽  
pp. 4261-4273 ◽  
Author(s):  
S. DATTA
Keyword(s):  
Monte Carlo ◽  
Thermodynamic Properties ◽  
Temperature Variation ◽  
Quantum Monte Carlo ◽  
Chemical Potential ◽  
Monte Carlo Study ◽  
Bose Gas ◽  
Diffusion Monte Carlo ◽  
Frequency Shifts ◽  
Realistic Potential

We investigate the thermodynamic properties of a trapped Bose gas of Rb atoms interacting through a repulsive potential at low but finite temperature (kBT < μ < Tc) by Quantum Monte Carlo method based upon the generalization of Feynman-Kac method1-3 applicable to many-body systems at T=0 to finite temperatures. In this paper, we report temperature variation of condensation fraction, chemical potential, density profile, total energy of the system, release energy, frequency shifts and moment of inertia within the realistic potential model (Morse type) for the first time by diffusion Monte Carlo technique. The most remarkable success was in achieving the same trend in the temperature variation of frequency shifts as was observed in JILA4 for both m=2 and m=0 modes. For other things, we agree with the work of Giorgini et al.,5 Pitaevskii et al.6 and Krauth.7

scholarly journals Diffusion Monte Carlo study of O2 adsorption on single layer graphene

2019 ◽  
Vol 100 (7) ◽  
Author(s):  
Hyeondeok Shin ◽  
Ye Luo ◽  
Anouar Benali ◽  
Yongkyung Kwon
Keyword(s):  
Monte Carlo ◽  
Single Layer ◽  
Monte Carlo Study ◽  
Single Layer Graphene ◽  
Diffusion Monte Carlo ◽  
Layer Graphene ◽  
O2 Adsorption
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