Straightened law for quantum isotropic Grassmannian OGr^+(5,10)

Details Straightened law for quantum isotropic Grassmannian OGr^+(5,10) Straightened law for quantum isotropic Grassmannian OGr^+(5,10)

2011-10-26

arxiv.org/abs/1110.5868v2

Physics

Mathematical Physics

Several proofs has been simplified. Few typographical errors has been corrected

Scientific paper

Projective embedding of an isotropic Grassmannian (or pure spinors) OGr^+(5,10) into projective space of spinor representation S can be characterized with a help of Gamma-matrices by equations Gamma_{alpha beta}^ilambda^{alpha}lambda^{beta}=0. A polynomial function of degree N with values in S defines a map to OGr^+(5,10) if its coefficients satisfy a 2N+1 quadratic equations. Algebra generated by coefficients of such polynomials is a coordinate ring of the quantum isotropic Grassmannian. We show that this ring is based on a lattice; its defining relations satisfy straightened law. This enables us to compute Poincare series of the ring.

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