Strong-coupling expansions and phase diagrams for the O(2), O(3), and O(4) Heisenberg spin systems in two dimensions

1979 ◽  
Vol 19 (10) ◽  
pp. 3091-3105 ◽  
Author(s):  
C. J. Hamer ◽  
John B. Kogut ◽  
L. Susskind
1981 ◽  
Vol 23 (9) ◽  
pp. 4698-4708 ◽  
Author(s):  
Herbert W. Hamber ◽  
John L. Richardson

2019 ◽  
Vol 31 (9) ◽  
pp. 095802 ◽  
Author(s):  
J D Alzate-Cardona ◽  
D Sabogal-Suárez ◽  
R F L Evans ◽  
E Restrepo-Parra

2002 ◽  
Vol 35 (31) ◽  
pp. 6545-6555 ◽  
Author(s):  
Heinz-J$uuml$rgen Schmidt

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