scholarly journals Influence of single particle orbital sets and configuration selection on multideterminant wavefunctions in quantum Monte Carlo

2015 ◽  
Vol 142 (23) ◽  
pp. 234103 ◽  
Author(s):  
Raymond C. Clay ◽  
Miguel A. Morales
Keyword(s):  
Monte Carlo ◽  
Single Particle ◽  
Quantum Monte Carlo ◽  
Configuration Selection

Dynamics of single-particle and collective excitations from Quantum Monte Carlo

1996 ◽  
Vol 46 (S5) ◽  
pp. 2655-2656
Author(s):  
E. G. Klepfish ◽  
C. E. Creffield ◽  
P. E. Kornilovitch ◽  
E. R. Pike ◽  
Sarben Sarkar
Keyword(s):  
Monte Carlo ◽  
Single Particle ◽  
Quantum Monte Carlo ◽  
Collective Excitations

Pseudopotential Portability in the Qmc Framework

1992 ◽  
Vol 291 ◽  
Author(s):  
M. Menchi ◽  
A. Bosin ◽  
F. Meloni ◽  
G. B. Bachelet
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Method ◽  
Single Particle ◽  
Quantum Monte Carlo ◽  
Effective Field ◽  
Binding Energies ◽  
Many Body ◽  
Particle Theory ◽  
Quantum Monte Carlo Method

ABSTRACTWe have calculated the binding energies of several two-electron pseudoions using the Diffusion Quantum Monte Carlo method. The comparison between our results and the experiment suggests that HSC pseudopotentials are portable from the original single particle theory (DFT-LDA) to the “exact” many body one. Moreover we are able to evaluate the degree of portability of each effective field.

scholarly journals SUPERFLUID PROPERTIES OF DILUTE NEUTRON MATTER

2011 ◽  
Vol 20 (02) ◽  
pp. 569-575 ◽  
Author(s):  
GABRIEL WLAZŁOWSKI ◽  
PIOTR MAGIERSKI
Keyword(s):  
Monte Carlo ◽  
Critical Temperature ◽  
Single Particle ◽  
Low Temperatures ◽  
Quantum Monte Carlo ◽  
Energy Gap ◽  
Particle Energy ◽  
Neutron Matter ◽  
Single Particle Energy ◽  
Superfluid State

We report results of fully non-perturbative calculations, based on Auxiliary Field Quantum Monte Carlo (AFQMC) approach, for the dilute neutron matter at the density ρ = 0.003 fm -3. Fundamental quantities which characterize the superfluid state: the single particle energy gap Δ(T), and the critical temperature Tc have been determined. The large value of Δ(0)/Tc ≈ 3.2 indicates that the system is not a BCS-type superfluid at low temperatures.

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