Variational Monte Carlo calculations of lithium atom in strong magnetic field

The variational Monte Carlo method is applied to investigate the ground state and some excited states of the lithium atom and its ions up to Z = 10 in the presence of an external magnetic field regime with γ = 0–100 arb. units. The effect of increasing field strength on the ground state energy is st...

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Bibliographic Details
Published in:Journal of experimental and theoretical physics 2017-01, Vol.124 (1), p.1-9
Main Authors: Doma, S. B., Shaker, M. O., Farag, A. M., El-Gammal, F. N.
Format: Article
Language:English
Subjects:
ATOMS
Classical and Quantum Gravitation
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COMPUTERIZED SIMULATION
Elementary Particles
EXCITED STATES
Field strength
Ground state
GROUND STATES
IONS
LITHIUM
MAGNETIC FIELDS
Molecules
MONTE CARLO METHOD
Monte Carlo methods
Monte Carlo simulation
Optics
Particle and Nuclear Physics
Physics
Physics and Astronomy
Quantum Field Theory
Relativity Theory
Solid State Physics
VARIATIONAL METHODS
WAVE FUNCTIONS
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Summary:The variational Monte Carlo method is applied to investigate the ground state and some excited states of the lithium atom and its ions up to Z = 10 in the presence of an external magnetic field regime with γ = 0–100 arb. units. The effect of increasing field strength on the ground state energy is studied and precise values for the crossover field strengths were obtained. Our calculations are based on using accurate forms of trial wave functions, which were put forward in calculating energies in the absence of magnetic field. Furthermore, the value of Y at which ground-state energy of the lithium atom approaches to zero was calculated. The obtained results are in good agreement with the most recent values and also with the exact values.
ISSN:1063-7761
1090-6509
DOI:10.1134/S1063776117010034