Redetermination of hard-core square-well-potential parameters for helium using new constructive methods for the ground state of liquidHe4

1982 ◽  
Vol 25 (1) ◽  
pp. 481-482 ◽  
Author(s):  
George A. Baker ◽  
Manuel de Llano ◽  
Justino Pineda ◽  
William C. Stwalley
Keyword(s):  
Ground State ◽  
Hard Core ◽  
Constructive Methods ◽  
Square Well ◽  
Potential Parameters

scholarly journals Конденсация (псевдо)магнонов в двумерной анизотропной S=1 (псевдо)спиновой системе

2018 ◽  
Vol 60 (11) ◽  
pp. 2105
Author(s):  
Е.В. Васинович ◽  
А.С. Москвин ◽  
Ю.Д. Панов
Keyword(s):  
Phase Transition ◽  
Spin Wave ◽  
Superconducting State ◽  
Ground State ◽  
Wave Spectrum ◽  
Hard Core ◽  
Boson Systems ◽  
Variable Valence ◽  
Anisotropic System ◽  
Spin Wave Spectrum

Abstract —A 2D anisotropic system of S = 1 centers of the charge triplet type in systems with variable valence or “semi-hard-core” boson systems with a limitation for the occupation of lattice sites n = 0, 1, 2 is studied in the framework of the pseudospin formalism. Assuming that the ground state is a quantum paramagnet, the pseudo-spin wave spectrum and also the conditions of the condensation of pseudomagnons with a phase transition to a superconducting state have been found using the Schwinger boson method.

The three body partition function for hard core square well clusters

1980 ◽  
Vol 73 (9) ◽  
pp. 4663-4667 ◽  
Author(s):  
W. H. Zurek ◽  
W. C. Schieve
Keyword(s):  
Partition Function ◽  
Hard Core ◽  
Square Well ◽  
Three Body
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