scholarly journals High-order coupled cluster method calculations of spontaneous symmetry breaking in the spin-half one-dimensional J_{1}-J_{2} model

2009 ◽  
Vol 12 (3) ◽  
pp. 411-428 ◽  
Author(s):  
Farnell
Keyword(s):  
Symmetry Breaking ◽  
Spontaneous Symmetry Breaking ◽  
High Order ◽  
Cluster Method ◽  
Coupled Cluster ◽  
Coupled Cluster Method ◽  
One Dimensional

scholarly journals HIGH-ORDER COUPLED CLUSTER RESULTS FOR QUANTUM ANTIFERROMAGNETS AND THEIR PHASE TRANSITIONS

2001 ◽  
Vol 15 (10n11) ◽  
pp. 1385-1388
Author(s):  
R. F. BISHOP ◽  
D. J. J. FARNELL
Keyword(s):  
Phase Transitions ◽  
Excited State ◽  
Approximation Scheme ◽  
Quantum Phase Transitions ◽  
High Order ◽  
Cluster Method ◽  
Coupled Cluster ◽  
Zero Temperature ◽  
Coupled Cluster Method ◽  
Quantum Antiferromagnets

The normal coupled cluster method is implemented to high orders in a systematic approximation scheme, and is shown to give accurate ground- and excited-state properties of anisotropic Heisenberg antiferromagnets and their quantum phase transitions at zero temperature.

scholarly journals High-order coupled cluster method calculations for the ground- and excited-state properties of the spin-halfXXZmodel

2000 ◽  
Vol 12 (30) ◽  
pp. 6887-6902 ◽  
Author(s):  
R F Bishop ◽  
D J J Farnell ◽  
S E Krüger ◽  
J B Parkinson ◽  
J Richter ◽  
...  
Keyword(s):  
Excited State ◽  
High Order ◽  
Cluster Method ◽  
Coupled Cluster ◽  
Coupled Cluster Method
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