Abstract
A Dirac operator D on quantized irreducible generalized flag manifolds is defined. This yields a Hilbert space realization of the covariant first-order differential calculi constructed by I. Heckenberger and S. Kolb. All differentials df=i[D,f] are bounded operators. In the simplest case of Podleś' quantum sphere one obtains the spectral triple found by L. Dabrowski and A. Sitarz.
Similar content being viewed by others
References
Baston, R. J. and Eastwood, M. G.: The Penrose Transform, Oxford University Press, 1989.
Cahen, M., Franc, A. and Gutt, S.: Spectrum of the Dirac operator on complex projective space P2q-1(C), Lett. Math. Phys. 18 (1989), 165–176.
Cahen, M. and Gutt, S.: Spin structures on compact simply connected Riemannian symmetric spaces, Simon Stevin 62(3/4) (1988), 209–242.
Chakraborty, P. S. and Pal, A.: Equivariant spectral Triples on the quantum SU(2) group, K-Theory 28(2) (2003), 107–126.
Connes, A.: Noncommutative Geometry, Academic Press, New York, 1994.
Connes, A.: Cyclic cohomology, quantum group symmetries and the local index formula for SUq(2), math.QA/0209142.
Dabrowski, L. and Sitarz, A.: Dirac operator on the standard Podle?' quantum sphere. In: Noncommutative Geometry and Quantum Groups, Banach Center Publications 61 (2003), 49–58.
Dijkhuizen, M. S. and Stokman, J. V.: Quantized flag manifolds and irreducible ✼-representations, Comm. Math. Phys. 203 (1999), 297–324.
Friedrich, T.: Dirac Operators in Riemannian Geometry. Amer. Math. Soc., Providence, 2000.
Fulton, W. and Harris, J.: Representation Theory, Springer, New York, 1991.
Goswami, D.: Twisted entire cyclic cohomology, J-L-O cocycles and equivariant spectral triples. math-ph/0204010.
Gover, A. R. and Zhang, R. B.: Geometry of quantum homogeneous vector bundles and representation theory of quantum groups I, Rev. Math. Phys. 11(5) (1999), 533–552.
Heckenberger, I. and Kolb, S.: The locally finite part of the dual coalgebra of quantized irreducible flag manifolds, math.QA/0301244, to appear in Proc. London Math. Soc.
Heckenberger, I. and Kolb, S.: Differential calculus on quantum homogeneous spaces, Lett. Math. Phys. 63(3) (2003), 255–264.
Joseph, A.: Quantum Groups and their Primitive Ideals. Springer, New York, 1995.
Klimyk, A. U. and Schmüdgen, K.: Quantum Groups and their Representations, Springer, New York, 1997.
Parthasarathy, R.: Dirac operator and the discrete series, Ann. of Math. 96(2) (1972), 1–30.
Podles, P.: Quantum spheres, Lett. Math. Phys. 14 (1987), 193–202.
Schmüdgen, K.: Commutator representations of differential calculi on the quantum group SUq(2). J. Geom. Phys. 31 (1999), 241–264.
Woronowicz, S. L.: Differential calculus on compact matrix pseudogroups (quantum groups). Comm. Math. Phys. 122(1) (1989), 125–170.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Krähmer>, U. Dirac Operators on Quantum Flag Manifolds. Letters in Mathematical Physics 67, 49–59 (2004). https://doi.org/10.1023/B:MATH.0000027748.64886.23
Issue Date:
DOI: https://doi.org/10.1023/B:MATH.0000027748.64886.23