A perturbation calculation of the ground state (X 1Σ+g) energy of the hydrogen molecule

1994 ◽  
Vol 224 (5-6) ◽  
pp. 476-482 ◽  
Author(s):  
K.T. Tang ◽  
J.P. Toennies ◽  
C.L. Yiu ◽  
T. Ćwiok ◽  
B. Jeziorski ◽  
...  
Keyword(s):  
Ground State ◽  
Hydrogen Molecule ◽  
Perturbation Calculation

Ground state of the hydrogen molecule in a strong magnetic field

1997 ◽  
Vol 56 (4) ◽  
pp. R2510-R2513 ◽  
Author(s):  
Yu. P. Kravchenko ◽  
M. A. Liberman
Keyword(s):  
Magnetic Field ◽  
Strong Magnetic Field ◽  
Ground State ◽  
Hydrogen Molecule

Interaction Potential between Ground State Helium Atom and theB1Σu+State of the Hydrogen Molecule

1972 ◽  
Vol 56 (3) ◽  
pp. 1219-1223 ◽  
Author(s):  
Henry F. Schaefer ◽  
Daniel Wallach ◽  
Charles F. Bender
Keyword(s):  
Helium Atom ◽  
Interaction Potential ◽  
Ground State ◽  
Hydrogen Molecule

A note on some valence bond calculations for the ground-state of the hydrogen molecule

2005 ◽  
Vol 358 (13) ◽  
pp. 4049-4050 ◽  
Author(s):  
Richard D. Harcourt ◽  
Thomas M. Klapötke
Keyword(s):  
Ground State ◽  
Hydrogen Molecule ◽  
Valence Bond

PERTURBATION THEORY OF THE PERIODIC ANDERSON LATTICE AND SUPERCONDUCTIVITY

1988 ◽  
Vol 02 (05) ◽  
pp. 681-687
Author(s):  
W. Geertsma
Keyword(s):  
Magnetic Field ◽  
Perturbation Theory ◽  
Fermi Level ◽  
Fourth Order ◽  
Ground State ◽  
Kondo Effect ◽  
Interparticle Interaction ◽  
Perturbation Calculation ◽  
Interparticle Interactions ◽  
Pair Energy

In this paper I develop a perturbation calculation of the second and fourth order interparticle interaction in band states, based on the Periodic Anderson Lattice. I show that 4th order interparticle interactions giving rise to the wellknown Kondo effect vanish in the superconducting ground state. This term survives in the presence of a magnetic field. Pair excitations can only give rise to an appreciable attractive contribution when the d states are less than half filled and the pair energy is near the Fermi level. The only important attractive interaction comes from the normal fourth order terms.

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