Phase transitions and renormalization group hamiltonian densities in the 80 diperiodic space groups
- 1 June 1986
- journal article
- research article
- Published by Taylor & Francis in Phase Transitions
- Vol. 7 (2-3) , 087-279
- https://doi.org/10.1080/01411598608209331
Abstract
Phase transitions for systems with diperiodic symmetry are discussed. Direct group-theoretical methods are employed to obtain a list of possible commensurate lower-symmetry phases (subgroups) which are induced by a single order parameter. The lower-symmetry phases for all 80 diperiodic space groups are given, along with specific details of the group-subgroup relationships. Results for the 17 two-dimensional space groups are also contained in our list. The renormalization-group Hamiltonian densities for the diperiodics are calculated. The 12 densities listed constitute the complete set of densities which may arise in the diperiodic space groups. Critical properties for the diperiodics can thus be obtained from analysis of these densities.Keywords
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