Quantum Monte Carlo simulation for the many-body decomposition of the interaction energy and electron correlation of small superalkali lithium clusters

2019 ◽  
Vol 151 (1) ◽  
pp. 014303 ◽  
Author(s):  
B. G. A. Brito ◽  
G.-Q. Hai ◽  
L. Cândido
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Interaction Energy ◽  
Electron Correlation ◽  
Quantum Monte Carlo ◽  
Many Body ◽  
Quantum Monte Carlo Simulation ◽  
The Many ◽  
Lithium Clusters

scholarly journals Thermal and Quantum Fluctuation Effects in Quasiperiodic Systems in External Potentials

2019 ◽  
Vol 4 (4) ◽  
pp. 93
Author(s):  
Fabio Cinti ◽  
Tommaso Macrì
Keyword(s):  
Monte Carlo ◽  
Quantum Monte Carlo ◽  
Quantum Fluctuation ◽  
Pair Potential ◽  
Many Body ◽  
Harmonic Confinement ◽  
Intrinsic Length ◽  
Fluctuation Effects ◽  
The Many ◽  
Quantum Monte Carlo Methods

We analyze the many-body phases of an ensemble of particles interacting via a Lifshitz–Petrich–Gaussian pair potential in a harmonic confinement. We focus on specific parameter regimes where we expect decagonal quasiperiodic cluster arrangements. Performing classical Monte Carlo as well as path integral quantum Monte Carlo methods, we numerically simulate systems of a few thousand particles including thermal and quantum fluctuations. Our findings indicate that the competition between the intrinsic length scale of the harmonic oscillator and the wavelengths associated to the minima of the pair potential generically lead to a destruction of the quasicrystalline pattern. Extensions of this work are also discussed.

Quantum-Monte Carlo simulation of ultra-short DGSOI devices: A Multi-Subband approach

2009 ◽  
Author(s):  
Carlos Sampedro ◽  
Raul Valin ◽  
Francisco Gamiz ◽  
Antonio Garcia-Loureiro ◽  
Andres Godoy ◽  
...  
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Quantum Monte Carlo ◽  
Quantum Monte Carlo Simulation
Sign in / Sign up

Export Citation Format

Share Document