Published July 1992
| Version v1
Journal article
Critical quantum spin chains as conformal fields theories
Creators
- 1. Indian Inst. of Science, Bangalore (India). Centre for Theoretical Studies
Description
A series of one-dimensional quantum Hamiltonians which, at their critical points, realise the minimal unitary series of conformal field theories with central charge less than l are presented. The models consist of ferromagnetically coupled SU(2) spins in a transverse magnetic field. It is shown how the infinite spin (free boson) limit can be obtained by using the Holstein-Primakoff transformation. The analysis can be generalised to SU(3) quantum chains which realise a different series of conformal field theories at criticality. (author). 30 refs., 3 figs
Additional details
Publishing Information
- Journal Title
- Indian Journal of Physics. Part A
- Journal Volume
- 66
- Journal Issue
- 4
- Journal Page Range
- p. 545-555.
- ISSN
- 0252-9262
- CODEN
- INJADP
INIS
- Country of Publication
- India
- Country of Input or Organization
- India
- INIS RN
- 24070619
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BOSONS; GINZBURG-LANDAU THEORY; HAMILTONIANS; PERTURBATION THEORY; PHASE DIAGRAMS; QUANTUM FIELD THEORY; SCALAR FIELDS; SPIN; SU-2 GROUPS; SU-3 GROUPS; TRANSFORMATIONS
- Descriptors DEC
- ANGULAR MOMENTUM; DIAGRAMS; FIELD THEORIES; INFORMATION; LIE GROUPS; MATHEMATICAL OPERATORS; PARTICLE PROPERTIES; QUANTUM OPERATORS; SU GROUPS; SYMMETRY GROUPS