Skip to main content

Free Probability Theory: Random Matrices and von Neumann Algebras

  • Conference paper
Proceedings of the International Congress of Mathematicians

Abstract

Independence in usual noncommutative probability theory (or in quantum physics) is based on tensor products. This lecture is about what happens if tensor products are replaced by free products. The theory one obtains is highly noncommutative: freely independent random variables do not commute in general. Also, at the level of groups, this means instead of ℤn we will consider the noncommutative free group F(n) = ℤ* ⋯ *ℤ or, looking at the Cayler graphs, a lattice is replaced by a homogeneous tree.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 39.99
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 54.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Similar content being viewed by others

References

  1. H. Bercovici and D. Voiculescu, Levy-Hincin type theorems for multiplicative and additive-free convolution, Pacific J. Math. 153 (1992), no. 2, 217–248.

    Article  MathSciNet  Google Scholar 

  2. H. Bercovici and D. Voiculescu, Free convolution of measures with unbounded support, Indiana Univ. Math. J. 42, no. 3 (1993), 733–773.

    Article  MathSciNet  Google Scholar 

  3. H. Bercovici and D. Voiculescu, Superconvergence to the central limit and failure of the Cramer theorem for free random variables, preprint 1994.

    Google Scholar 

  4. P. Biane, Permutation model for semicircular systems and quantum random walks, preprint 1993.

    Google Scholar 

  5. P. Biane, Representations of unitary groups and free convolution, Publ. RIMS Kyoto Univ. 31 (1995), 63–79.

    Article  MathSciNet  Google Scholar 

  6. M. Bozejko and R. Speicher, An example of generalized Brownian motion, Comm. Math. Phys. 137 (1991), 519–531; II in Quantum Probab. & Related Topics VII (1990), 67–77.

    Article  MathSciNet  Google Scholar 

  7. A. Connes, Classification of injective factors, Ann. of Math. (2) 104 (1976), 73–115.

    Article  MathSciNet  Google Scholar 

  8. A. Connes, A factor of type IIi with countable fundamental group, J. Operator Theory 4 (1980), 151–153.

    MathSciNet  MATH  Google Scholar 

  9. A. Connes and V. F. R. Jones, Property T for von Neumann algebras, Bull. London Math. Soc. 17 (1985), 57–62.

    Article  MathSciNet  Google Scholar 

  10. K. J. Dykema, On certain free product factors via an extended matrix model, J. Funct. Anal. 112 (1993), 31–60.

    Article  MathSciNet  Google Scholar 

  11. K. J. Dykema, Free products of hyperfinite von Neumann algebras and free dimension, Duke Math. J. 69 (1993), 97–119.

    Article  MathSciNet  Google Scholar 

  12. K. J. Dykema, Interpolated free group factors, Pacific J. Math. 163 (1994), 123–135.

    Article  MathSciNet  Google Scholar 

  13. K. J. Dykema, Amalgamated free products of multi-matrix algebras and a construction of subfactors of a free group, preprint 1994.

    Google Scholar 

  14. U. Haagerup, Quasitraces on exact C*-algberas are traces, preprint 1991.

    Google Scholar 

  15. V. F. R. Jones, Index of subfactors, Invent. Math. 72 (1983), 1–25.

    Article  MathSciNet  Google Scholar 

  16. H. Maassen, Addition of freely independent random variables, J. Funct. Anal. 106 (1992), 409–438.

    Article  MathSciNet  Google Scholar 

  17. F. J. Murray and J. von Neumann, On rings of operators, IV, Ann. of Math. (2) 44 (1943), 716–808.

    Article  MathSciNet  Google Scholar 

  18. A. Nica, Asymptotically free families of random unitaries in symmetric groups, Pacific J. Math. 157 no. 2, (1993), 295–310.

    Article  MathSciNet  Google Scholar 

  19. A. Nica, Expected number of cycles of length c of a free word in k permutations, preprint.

    Google Scholar 

  20. A. Nica, R-transforms of free joint distributions, and non-crossing partitions, to appear in J. of Funct. Anal.

    Google Scholar 

  21. A. Nica, A one-parameter family of transforms linearizing convolution laws for probability distributions, Commun. Math. Phys. 168 (1995), 187–207.

    Article  MathSciNet  Google Scholar 

  22. S. Popa, Markov traces on universal Jones algebras and subfactors of finite index, Invent. Math. 111 (1993), 375–405.

    Article  MathSciNet  Google Scholar 

  23. F. Radulescu, A one-parameter group of automorphism of L(F ) ⊗ B(H) scaling the trace, C. R. Acad. Sci. Paris, t.314, Serie I (1992), 1027–1032.

    MathSciNet  MATH  Google Scholar 

  24. F. Radulescu, Stable equivalence of the weak closures of free groups convolution algebras, Comm. Math. Phys. 156 (1993), 17–36.

    Article  MathSciNet  Google Scholar 

  25. F. Radulescu, Random matrices, amalgamated free products and subfactors of the von Neumann algebra of a free group, Invent. Math. 115, no. 2 (1994), 347–389.

    Article  MathSciNet  Google Scholar 

  26. F. Radulescu, A type III λ factor with core isomorphic to the free group von Neumann algebra of a free group tensor B(H), preprint.

    Google Scholar 

  27. F. Radulescu, On the von Neumann algebra of Toeplitz operators with automorphic symbol, preprint 1993.

    Google Scholar 

  28. R. Speicher, A new example of independence and ‘white noise’, Probab. Theory Related Fields 84 (1990), 141–159.

    Article  MathSciNet  Google Scholar 

  29. R. Speicher, Multiplicative functions on the lattice of non-crossing partitions and free convolution, Math. Ann. 298 (1994), 611.

    Article  MathSciNet  Google Scholar 

  30. R. Speicher, Combinatorial theory of the free product with amalgamation and operator-valued free probability theory, Habilitationsschrift, Universität Heidelberg, 1994.

    MATH  Google Scholar 

  31. E. Störmer, Entropy of some automorphisms of the II 1 -factors of free groups in infinite number of generators, preprint.

    Google Scholar 

  32. D. Voiculescu, Symmetries of some reduced free product C*-algebras, in Lecture Notes in Math., vol. 1132 Springer-Verlag, Berlin and New York (1985), 556–588.

    Google Scholar 

  33. D. Voiculescu, Addition of certain non-commuting random variables, J. Funct. Anal. 66 (1986), 323–346.

    Article  MathSciNet  Google Scholar 

  34. D. Voiculescu, Multiplication of certain non-commuting random variables, J. Operator Theory 18 (1987), 223–235.

    MathSciNet  MATH  Google Scholar 

  35. D. Voiculescu, Dual algebraic structures on operator algebras related to free products, J. Operator Theory 17 (1987), 85–98.

    MathSciNet  MATH  Google Scholar 

  36. D. Voiculescu, Operations on certain noncommutative operator-valued random vari-ables, preprint, Berkeley, 1992.

    Google Scholar 

  37. D. Voiculescu, Circular and semicircular systems and free product, in Progr. Math. vol. 92 (1990), 45–60, Birkhäuser, Boston, MA.

    MathSciNet  MATH  Google Scholar 

  38. D. Voiculescu, Limit laws for random matrices and free products, Invent. Math. 104 (1991), 201–220.

    Article  MathSciNet  Google Scholar 

  39. D. Voiculescu, The analogues of entropy and of Fisher’s information measure in free probability theory, I, Comm. Math. Phys. 155 (1993), 71–92; II, Invent. Math., 118 (1994), 411–440.

    Article  MathSciNet  Google Scholar 

  40. D. Voiculescu, K. J. Dykema, and A. Nica, Free random variables, CRM Monograph Series, vol. I, American Mathematical Society, Providence, RI, 1992.

    Book  Google Scholar 

  41. E. Wigner, Characteristic vectors of bordered matrices with infinite dimension, Ann. of Math. (2) 62 (1955), 548–564.

    Article  MathSciNet  Google Scholar 

  42. E. Wigner, On the distribution of the roots of certain symmetric matrices, Ann. of Math. 67 (1958), 325–327.

    Article  MathSciNet  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 1995 Birkhäser Verlag, Basel, Switzerland

About this paper

Cite this paper

Voiculescu, D. (1995). Free Probability Theory: Random Matrices and von Neumann Algebras. In: Chatterji, S.D. (eds) Proceedings of the International Congress of Mathematicians. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-9078-6_17

Download citation

  • DOI: https://doi.org/10.1007/978-3-0348-9078-6_17

  • Publisher Name: Birkhäuser, Basel

  • Print ISBN: 978-3-0348-9897-3

  • Online ISBN: 978-3-0348-9078-6

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics