Abstract
We define a planar para algebra, which arises naturally from combining planar algebras with the idea of \({\mathbb{Z}_{N}}\) para symmetry in physics. A subfactor planar para algebra is a Hilbert space representation of planar tangles with parafermionic defects that are invariant under para isotopy. For each \({\mathbb{Z}_{N}}\), we construct a family of subfactor planar para algebras that play the role of Temperley–Lieb–Jones planar algebras. The first example in this family is the parafermion planar para algebra (PAPPA). Based on this example, we introduce parafermion Pauli matrices, quaternion relations, and braided relations for parafermion algebras, which one can use in the study of quantum information. An important ingredient in planar para algebra theory is the string Fourier transform (SFT), which we use on the matrix algebra generated by the Pauli matrices. Two different reflections play an important role in the theory of planar para algebras. One is the adjoint operator; the other is the modular conjugation in Tomita–Takesaki theory. We use the latter one to define the double algebra and to introduce reflection positivity. We give a new and geometric proof of reflection positivity by relating the two reflections through the string Fourier transform.
Similar content being viewed by others
References
Atiyah M.F.: Topological quantum field theory. Publ. Math. l’IHÉS 68, 175–186 (1988)
Au-Yang, H., Perk, J.: About 30 years of integrable chiral potts model, quantum groups at roots of unity, and cyclic hypergeometric functions. Proc. Centre Math. Appl. (2016). arXiv:1601.01014
Böckenhauer J., Evans D.E.: Modular invariants, graphs and \({\alpha}\)-induction for nets of subfactors I. Commun. Math. Phys. 197(2), 361–386 (1998)
Bigelow, S., Morrison, S., Peters, E., Snyder, N.: Constructing the extended Haagerup planar algebra. Acta Math. 29–82 (2012)
Birman J., Wenzl H.: Braids, link polynomials and a new algebra. Trans. AMS 313(1), 249–273 (1989)
Cobanera E., Ortiz G.: Fock parafermions and self-dual representations of the braid group. Phys. Rev. A 89, 012328 (2014)
Etingof, P., Nikshych, D., Ostrik, V.: On fusion categories. Ann. Math. 581–642 (2005)
Fateev V.A., Zamolodchikov A.B.: Self-dual solutions of the star-triangle relations in zn-models. Phys. Lett. A 92(1), 37–39 (1982)
Goldschmidt D.M., Jones V.F.R.: Metaplectic link invariants. Geom. Dedic. 31(2), 165–191 (1989)
Jaffe A., Janssens B.: Characterization of reflection positivity: majoranas and spins. Commun. Math. Phys. 346(3), 1021–1050 (2016)
Jaffe, A., Janssens, B.: Reflection positive doubles. J. Funct. Anal. (to appear) (2016). arXiv:1607.07126. doi:10.1016/j.jfa.2016.11.014
Jaffe, A., Liu, Z.,Wozniakowski, A.: Topological design of protocol (2016). arXiv:1611.06447
Jaffe, A., Liu, Z., Wozniakowski, A.: Holographic software for quantum networks (2016). arXiv:1605.00127
Jiang C., Liu Z., Wu J.: Noncommutative uncertainty principles. J. Funct. Anal. 270, 264–311 (2016)
Jones V.F.R.: Index for subfactors. Invent. Math. 72, 1–25 (1983)
Jones, V.F.R.: A Polynomial Invariant for Knots Via von Neumann Algebras. Mathematical Sciences Research Institute (1985)
Jones V.F.R.: On a certain value of the Kauffman polynomial. Commun. Math. Phys. 125(3), 459–467 (1989)
Jones V.F.R.: Baxterization. Int. J. Mod. Phys. A 6(12), 2035–2043 (1991)
Jones, V.F.R.: Planar algebras, I. N. Z. J. Math. (1998). arXiv:math/9909027
Jones V.F.R.: Quadratic tangles in planar algebras. Duke Math J. 161(12), 2257–2295 (2012)
Jaffe A., Pedrocchi F.L.: Reflection positivity for majoranas. Ann. Henri Poincaré 16, 189–203 (Springer) (2015)
Jaffe A., Pedrocchi F.L.: Reflection positivity for parafermions. Commun Math. Phys. 337, 455–472 (2015)
Kauffman L.H.: An invariant of regular isotopy. Trans AMS. 318, 417–471 (1990)
Liu, Z.: Exchange relation planar algebras of small rank. Trans. AMS 368, 8303–8348 (2016)
Liu, Z.: Yang–Baxter relation planar algebras. arXiv:1507.06030
Longo R., Rehren K.-H.: Nets of subfactors. Rev. Math. Phys. 7(04), 567–597 (1995)
Morrison S., Peters E., Snyder N.: Skein theory for the \({{D}_{2n}}\) planar algebras. J. Pure Appl. Algebra 214, 117–139 (2010)
Murakami J.: The Kauffman polynomial of links and representation theory. Osaka J. Math. 24(4), 745–758 (1987)
Ocneanu, A.: Quantized groups, string algebras and Galois theory for algebras. In: Operator algebras and applications, vol. 2. London Mathematical Society. Lecture Note Series, vol. 136. Cambridge University Press, Cambridge, pp. 119–172 (1988)
Ocneanu A.: The classification of subgroups of quantum SU(N). Contemp. Math. 294, 133–160 (2002)
Osterwalder K., Schrader R.: Axioms for Euclidean Green’s functions. Commun Math. Phys. 31(2), 83–112 (1973)
Osterwalder K., Schrader R.: Euclidean Fermi fields and a Feynman–Kac formula for boson–fermion models. Helv. Phys. Acta 46, 277–302 (1973)
Ostrik V.: Module categories, weak Hopf algebras and modular invariants. Transform. Groups 8(2), 177–206 (2003)
Popa S.: Classification of subfactors: reduction to commuting squares. Invent. Math. 101, 19–43 (1990)
Popa S.: Classification of amenable subfactors of type II. Acta Math. 172, 352–445 (1994)
Wenzl H.: On sequences of projections. C.R. Math. Rep. Acad. Sci. Can. 9(1), 5–9 (1987)
Witten E.: Topological quantum field theory. Commun. Math. Phys. 117(3), 353–386 (1988)
Xu F.: New braided endomorphisms from conformal inclusions. Commun. Math. Phys. 192(2), 349–403 (1998)
Author information
Authors and Affiliations
Corresponding author
Additional information
Communicated by Y. Kawahigashi
Rights and permissions
About this article
Cite this article
Jaffe, A., Liu, Z. Planar Para Algebras, Reflection Positivity. Commun. Math. Phys. 352, 95–133 (2017). https://doi.org/10.1007/s00220-016-2779-4
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00220-016-2779-4