Self-consistent interatomic interaction in quantum crystals

1999 ◽  
Author(s):  
Piotr Sloma ◽  
Cecylia Malinowska-Adamska ◽  
Janusz Tomaszewski
Keyword(s):  
Interatomic Interaction ◽  
Self Consistent ◽  
Quantum Crystals

Theory of the interaction of the lattice vibrations with the vibrational excitations in solid hydrogen

1970 ◽  
Vol 48 (5) ◽  
pp. 489-501 ◽  
Author(s):  
J. Noolandi ◽  
J. Van Kranendonk
Keyword(s):  
Solid Hydrogen ◽  
The Self ◽  
Order Perturbation ◽  
Lattice Vibrations ◽  
Phonon Coupling ◽  
Phonon Interaction ◽  
Self Consistent ◽  
Vibrational Excitations ◽  
Intramolecular Vibrations ◽  
Quantum Crystals

The theory of the interaction of the vibrational excitations (vibrons) with the lattice vibrations in solid hydrogen is developed. The phonons are treated in the self-consistent harmonic (SCH) approximation appropriate to quantum crystals. The vibron–phonon interaction is expanded in terms of the SCH phonon operators rather than in powers of the displacements of the molecules from their equilibrium positions. First- and second-order perturbation corrections to the vibron energies arising from the vibron–phonon coupling are calculated. The effect of the anharmonicity of the intramolecular vibrations in conjunction with the vibron–phonon coupling is also discussed.

Dynamics and thermodynamics of quantum crystals in the self-consistent phonon theory

1997 ◽  
Author(s):  
Cecylia Malinowska-Adamska ◽  
Piotr Sloma ◽  
Janusz Tomaszewski
Keyword(s):  
The Self ◽  
Self Consistent ◽  
Quantum Crystals ◽  
Phonon Theory

The evolution of the Kuiper belt during the formation of the outer planets

1999 ◽  
Vol 173 ◽  
pp. 37-44
Author(s):  
M.D. Melita ◽  
A. Brunini
Keyword(s):  
Kuiper Belt ◽  
Outer Planets ◽  
Self Consistent ◽  
Planetary Bodies ◽  
Mass Depletion

AbstractA self-consistent study of the formation of planetary bodies beyond the orbit of Saturn and the evolution of Kuiper disks is carried out by means of an N-body code where accretion and gravitational encounters are considered. This investigation is focused on the aggregation of massive bodies in the outer planetary region and on the consequences of such process in the corresponding cometary belt. We study the link between the bombardment of massive bodies and mass depletion and eccentricity excitation.

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