Title of article :
Graded contractions of the Pauli graded
Author/Authors :
J. Hrivn?k، نويسنده , , P. Novotn?، نويسنده , , A. Atoyan and J. Patera، نويسنده , , J. Tolar، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Pages :
53
From page :
498
To page :
550
Abstract :
The Lie algebra is considered in the basis of generalized Pauli matrices. Corresponding grading is the Pauli grading here. It is one of the four gradings of the algebra which cannot be further refined. The set of 48 contraction equations for 24 contraction parameters is solved. Our main tools are the symmetry group of the Pauli grading of , which is essentially the finite group , and the induced symmetry of the system . A list of all equivalence classes of solutions of the contraction equations is provided. Among the solutions, 175 equivalence classes are non-parametric and 13 solutions depend on one or two continuous parameters, providing a continuum of equivalence classes and subsequently continuum of non-isomorphic Lie algebras. Solutions of the contraction equations of Pauli graded are identified here as specific solvable Lie algebras of dimensions up to 8. Earlier algorithms for identification of Lie algebras, given by their structure constants, had to be made more efficient in order to distinguish non-isomorphic Lie algebras encountered here. Resulting Lie algebras are summarized in tabular form. There are 88 indecomposable solvable Lie algebras of dimension 8, 77 of them being nilpotent. There are 11 infinite sets of parametric Lie algebra which still deserve further study.
Keywords :
Lie algebra , Graded contraction , View the MathML source , Pauli grading , Lie algebra identification
Journal title :
Linear Algebra and its Applications
Serial Year :
2006
Journal title :
Linear Algebra and its Applications
Record number :
825303
Link To Document :
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