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arXiv · 1012.0480

Nonrelativistic counterparts of twistors and the realizations of Galilean conformal algebra

S. Fedoruk·P. Kosinski·J. Lukierski·P. Maslanka
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Abstract

Using the notion of Galilean conformal algebra (GCA) in arbitrary space dimension d, we introduce for d=3 quantized nonrelativistic counterpart of twistors as the spinorial representation of O(2,1){\oplus}SO(3) which is the maximal semisimple subalgebra of three-dimensional GCA. The GC-covariant quantization of such nonrelativistic spinors, which shall be called also Galilean twistors, is presented. We consider for d=3 the general spinorial matrix realizations of GCA, which are further promoted to quantum-mechanical operator representations, expressed as bilinears in quantized Galilean twistors components. For arbitrary Hermitian quantum-mechanical Galilean twistor realizations we obtain the result that the representations of GCA with positive-definite Hamiltonian do not exist. For non-positive H we construct for N{\geq}2 the Hermitian Galilean N-twistor realizations of GCA; for N=2 such realization is provided explicitly.

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S. Fedoruk, P. Kosinski, J. Lukierski, P. Maslanka. 2010-12-02. Nonrelativistic counterparts of twistors and the realizations of Galilean conformal algebra. https://doi.org/10.1016/j.physletb.2011.03.059

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