Abstract
We will relate the surprising Regge symmetry of the Racah-Wigner 6 j symbols to the surprising Okamoto symmetry of the Painlevé VI differential equation. This then presents the opportunity to give a conceptual derivation of the Regge symmetry, as the representation theoretic analogue of the derivation in [5, 3] of the Okamoto symmetry.
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Biedenharn, L.C., Louck, J.D.: Angular momentum in quantum physics. In: Encyclopedia of Mathematics and its Applications, Vol. 8, Reading, MA:Addison-Wesley, 1981
Biedenharn, L.C., Louck, J.D.: The Racah-Wigner algebra in quantum theory. In: Encyclopedia of Mathematics and its Applications, Vol. 9, Reading, MA:Addison-Wesley, 1981
Boalch, P.P.: Six results on Painlevé VI. SMF, Séminaires et congrès, Vol. 14, to appear, available at http://arxiv.org/abs/math/0503043, 2005
Boalch P.P. (2002). G-bundles, isomonodromy and quantum Weyl groups. Int. Math. Res. Not. no. 22: 1129–1166
Boalch P.P. (2005). From Klein to Painlevé via Fourier, Laplace and Jimbo. Proc. London Math. Soc. 90(3): 167–208
Fulton W., Harris J.: Representation theory. GTM, Vol. 129, Berlin Heidelberg-New York:Springer, 1991
Gliske S., Klink W.H. and Ton-That T. (2005). Algorithms for computing generalized U(N) Racah coefficients. Acta Appl. Math. 88(2): 229–249
Granovskiĭ Ya.A. and Zhedanov A.S. (1988). Nature of the symmetry group of the 6 j-symbol. Sov. Phys. JETP 67(10): 1982–1985
Hitchin N.J. (1997). Geometrical aspects of Schlesinger’s equation. J. Geom. Phys. 23(3–4): 287–300
Inaba M., Iwasaki K. and Saito M.-H. (2004). Bäcklund transformations of the sixth Painlevé equation in terms of Riemann-Hilbert correspondence. I. M. R. N. 2004(1): 1–30
Jimbo M. and Miwa T. (1981). Monodromy preserving deformations of linear differential equations with rational coefficients II. Physica 2D: 407–448
Kirillov, A.N., Yu, N.: Reshetikhin Representations of the algebra U q (sl(2)), q-orthogonal polynomials and invariants of links. In: Adv. Ser. Math. Phys., Vol. 7, V. Kac, ed., reprinted in: Adv. Ser. Math. Phys. Vol. 11, T. Kohno, ed., Singapore:World Scientific, 1989, pp. 285–339, 202–256 resp.
Klink W.H. and Ton-That T. (1989). Calculation of Clebsch-Gordan and Racah coefficients using symbolic manipulation programs. J. Comput. Phys. 80(2): 453–471
Okamoto K. (1987). Studies on the Painlevé equations. I. Sixth Painlevé equation P VI. Ann. Mat. Pura Appl. (4) 146: 337–381
Ponzano, G., Regge, T.: Semiclassical limit of Racah coefficients. In: Spectroscopic and group theoretical methods in physics, Bloch, F. ed., NewYork: John Wiley and Sons, 1968, pp. 1–58
Racah G. (1942). Theory of complex spectra II. Phys. Rev. 62: 438–462
Regge T. (1958). Symmetry properties of Clebsch–Gordan coefficients. Il Nuovo Cimento X: 544–545
Regge T. (1959). Symmetry properties of Racah’s coefficients. Il Nuovo Cimento XI: 116–117
Roberts J. (1999). Classical 6 j-symbols and the tetrahedron. Geom. Topol. 3: 21–66 (electronic)
Rotenberg M., Bivins R., Metropolis N. and Wooten J.K. (1959). The 3-j and 6-j symbols. Crosby Lockwood and Son Ltd, London
Taylor Y. and Woodward C. (2005). 6 j symbols for U q (sl 2) and non-Euclidean tetrahedra. Selecta Math. 11: 539–571
Toledano Laredo V. (2002). A Kohno-Drinfeld theorem for quantum Weyl groups. Duke Math. J. 112(3): 421–451
Wigner, E.P.: On the matrices which reduce the Kronecker products of representations of S.R. groups. (1940). Published in: Quantum theory of angular momentum L.C. Biedenharn, ed., New York: Acad. Press, 1965
Wilson J.A. (1980). Some hypergeometric orthgonal polynomials. SIAM J. Math. Anal. 11(4): 690–701
Želobenko, D.P.: Compact Lie groups and their representations. A.M.S. Trans. Math. Monog. Vol. 40, Providence, RI: Amer. Math. Soc, 1973
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Boalch, P.P. Regge and Okamoto Symmetries. Commun. Math. Phys. 276, 117–130 (2007). https://doi.org/10.1007/s00220-007-0328-x
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DOI: https://doi.org/10.1007/s00220-007-0328-x