Renormalized finite-cluster method for lattice models. I. Site renormalization and star cluster expansions

1980 ◽  
Vol 22 (11) ◽  
pp. 5245-5258 ◽  
Author(s):  
William J. Shugard ◽  
John D. Weeks
Keyword(s):  
Lattice Models ◽  
Star Cluster ◽  
Cluster Method ◽  
Cluster Expansions

COUPLED CLUSTER EXPANSIONS FOR (2 + 1) DIMENSIONAL U(1) LATTICE GAUGE THEORY WITH IMPROVED HAMILTONIAN

2000 ◽  
Vol 15 (11n12) ◽  
pp. 737-745 ◽  
Author(s):  
XI-YAN FANG ◽  
SHUO-HONG GUO ◽  
JIN-MING LIU
Keyword(s):  
Wave Function ◽  
Gauge Theory ◽  
Lattice Gauge Theory ◽  
Cluster Method ◽  
Coupled Cluster ◽  
Coupled Cluster Method ◽  
Cluster Expansions ◽  
Lattice Gauge ◽  
Seventh Order

Using coupled cluster method, we calculate the vacuum wave function and the mass gaps of (2 + 1)-dimensional U(1) lattice gauge theory with improved Hamiltonian up to the seventh order. The results are compared with those from the unimproved Hamiltonian.

scholarly journals Numerical linked-cluster expansions for disordered lattice models

2019 ◽  
Vol 99 (20) ◽  
Author(s):  
M. D. Mulanix ◽  
Demetrius Almada ◽  
Ehsan Khatami
Keyword(s):  
Lattice Models ◽  
Cluster Expansions ◽  
Disordered Lattice

The relativistic coupled-cluster method: transition energies of bismuth and eka-bismuth

1998 ◽  
Vol 94 (1) ◽  
pp. 181-187 ◽  
Author(s):  
EPHRAIM ELIAV ◽  
UZI KALDOR ◽  
YASUYUKI ISHIKAWA
Keyword(s):  
Cluster Method ◽  
Coupled Cluster ◽  
Coupled Cluster Method ◽  
Transition Energies
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