Published January 30, 1992 | Version v1
Journal article Metadata-only

A two-parameter deformation of the SU(1vertical stroke1) superalgebra and the XY quantum chain in a magnetic field

Creators

  • 1. Physikalisches Inst., Univ. Bonn (Germany)
  • 2. Theory Div., CERN, Geneva (Switzerland)

Description

We show that the XY quantum chain in a magnetic field is invariant under a two-parameter deformation of the SU(1vertical stroke1) superalgebra. One is led to an extension of the braid group and the Hecke algebra which reduce to the known ones when the two parameters coincide. The physical significance of the two parameters is discussed. (orig.)

Additional details

Publishing Information

Journal Title
Physics Letters. Section B
Journal Volume
275
Journal Issue
3/4
Series
Phys. Lett., Sect. B.
Journal Page Range
350-354
ISSN
0370-2693
CODEN
PYLBA

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
23032684
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
DEFORMATION; GRADED LIE GROUPS; HAMILTONIANS; INVARIANCE PRINCIPLES; MAGNETIC FIELDS; SU-2 GROUPS; SUPERSYMMETRY
Descriptors DEC
LIE GROUPS; MATHEMATICAL OPERATORS; QUANTUM OPERATORS; SU GROUPS; SYMMETRY; SYMMETRY GROUPS