Heide Narnhofer

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Heide Narnhofer (born June 13, 1945 in Vienna ) is an Austrian theoretical physicist .

After graduating from high school in Vienna, Heide Narnhofer studied physics at the University of Vienna from 1963 and received his doctorate in theoretical physics under Walter Thirring in 1968 ( The conductivity of contact surfaces ). At the same time, she was a research assistant from 1967 to 1969 and had studied mathematics and physics for the teaching profession and also taught briefly as a teacher in 1970/71 (teaching degree in November 1970). Before that, she was on a scholarship at IHES in Paris in 1969/70 (with Derek W. Robinson among others ). In 1971 she again became an assistant at Thirring in Vienna, who named her in his autobiography as one of his three closest scientific collaborators after his return from CERN (1971). She is an associate professor i. R. at the University of Vienna.

1974/75 she was a visiting scientist at Bell Laboratories , 1981 visiting professor at the University of Göttingen , 1980 gave guest lectures at SISSA in Trieste and was a visiting scientist in Hamburg, Lausanne, Bielefeld, Orsay, Leipzig, Berkeley, Princeton and Rome.

It deals with mathematical physics, statistical physics and quantum physics. In particular, she investigated how states of equilibrium arise in the quantum mechanics of large systems (quantum ergodic theory ). Your collaboration with Thirring in the 1970s fell into a creative phase of Thirring, in which he turned to quantum mechanical many-particle systems with Coulomb interaction and systems with gravitational interaction (both long-range and singular when the particles approached). With Thirring she derived convexity properties and from them exact inequalities in the spectrum of many-body systems in Coulomb systems. With Peter Hertel and also with Thirring, she found gravitative (plus Coulomb interaction) systems of non-relativistic fermions as cases of negative specific heat . Further work with Thirring concerned the existence of quasiparticles and the characterization of equilibrium states in quantum statistics as adiabatically invariant states.

With Alain Connes and Thirring she generalized the Kolmogorow-Sinai entropy to a quantum mechanical dynamic entropy in the context of non-commutative operator algebras . Together with Rudolf Haag and Ulrich Stein, she investigated the Hawking temperature and the Unruh effect of gravity within the framework of Haag's axiomatic quantum field theory . More recently, she has also dealt with quantum information theory and quantum entanglement .

From 1993 to 1998 she was on the Executive Committee of the International Association of Mathematical Physics , which she helped to found in the mid-1970s. Together with Peter Michor and Thirring, she played a key role in founding the Erwin Schrödinger Institute in Vienna in 1993. In 1994 she received the Erwin Schrödinger Prize .

Fonts (selection)

Except for the works cited in the footnotes.

  • with E. Lieb: The thermodynamic limit for jellium , J. Stat. Phys., Vol. 12, 1975, p. 291
  • with Geoffrey Sewell: Equilibrium states of gravitational systems , Comm. Math. Phys. Vol. 71, 1980, pp. 1-28, Project Euclid
  • with Thirring: Mixing properties of quantum systems , J. Stat. Phys., Vol. 57, 1989, pp. 811-825
  • with H. Posch, W. Thirring: Dynamics of unstable systems, Phys. Rev. A. Volume 42, 1990, pp. 1880-1890
  • mit, Thirring: On quantum field theory with Galilei-invariant interactions, Phys. Rev. Lett., Volume 54, 1990, p. 1863 (more detailed Narnhofer, Thirring: Galilei-invariant quantum field theories with pair-interaction, in International Journal of Modern Physics, Volume 6, 1991, pp. 2937-2970)
  • with Thirring: Algebraic K-systems , Lett. Math. Phys., Vol. 20, 1990, pp. 231-250
  • with Thirring: Clustering of algebraic K-systems , Lett. Math. Phys., Vol. 30, 1994, pp. 307-316
  • with Thirring: Entanglement, Bell inequality and all that , J. of Math. Phys., Volume 52, 2012, p. 095210
  • with WF Wreszinski: On reduction of the wave-packet, decoherence, irreversibility and the second law of thermodynamics , Physics Reports, Volume 541, 2014, Issue 4

Web links

Individual evidence

  1. ↑ Heide Narnhofer in the Mathematics Genealogy Project (English)Template: MathGenealogyProject / Maintenance / id used
  2. ^ Walter Thirring: The joy of discovery . World Scientific, 2011, pp. 123 . Others were Elliott Lieb and Harald A. Posch , the latter for computer simulations.
  3. ^ H. Narnhofer, W. Thirring: Convexity properties of Coulomb systems . In: Acta Physica Austriaca . tape 41 , 1975, p. 281-297 .
  4. ^ P. Hertel, H. Narnhofer, W. Thirring: Thermodynamic functions for fermions with gravostatic and electrostatic interactions . In: Commun. Math. Phys. tape 28 , 1972, p. 159-172 , doi : 10.1007 / BF01645513 ( projecteuclid.org ).
  5. ^ H. Narnhofer, M. Requardt, W. Thirring: Quasiparticles at finite temperature . In: Comm. Math. Phys. tape 92 , 1983, pp. 247-268 , doi : 10.1007 / BF01210849 ( projecteuclid.org ).
  6. ^ H. Narnhofer, W. Thirring: Adiabatic theorem in quantum statistical mechanics . In: Phys. Rev. A . tape 26 , 1982, pp. 3646 , doi : 10.1103 / PhysRevA.26.3646 .
  7. ↑ A. Connes, H. Narnhofer, W. Thirring: Dynamical entropy of C * -Algebras and von Neumann algebras . In: Comm. Math. Phys. tape 112 , 1987, pp. 691-719 , doi : 10.1007 / BF01225381 .
  8. ^ Rudolf Haag, Heide Narnhofer, Ulrich Stein: On Quantum Field Theory in Gravitational Background . In: Commun. Math. Phys. tape 94 , 1984, pp. 219-238 , doi : 10.1007 / BF01209302 ( projecteuclid.org ).
  9. ^ For example, Walter Thirring, The joy of discovery, p. 161
personal data
SURNAME Narnhofer, Heide
BRIEF DESCRIPTION Austrian theoretical physicist
DATE OF BIRTH June 13, 1945
PLACE OF BIRTH Vienna