Abstract
The classical concept ofK-flow is generalized to cover situations encountered in non-equilibrium quantum statistical mechanics. The ergodic properties of generalizedK-flows are discussed. Several non-isomorphic examples are constructed, which differ already in the type (II1, IIIλ, and III1) of the factor on which they are defined. In particular, generalized factorK-flows with dynamical entropy either zero (singularK-flows) or infinite (special non-abelianK-flows) are constructed.
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Araki, H.: Remarks on spectra of modular operators of von Neumann algebras. Commun. math. Phys.28, 267–277 (1972)
Arnold, V. I., Avez, A.: Ergodic problems of classical mechanics. New York: W. A. Benjamin 1968
Arveson, W. B.: Analyticity in operator algebras. Am. J. Math.89, 578–642 (1967)
Connes, A.: Une classification des facteurs de type III. Ann. Scient. Ec. Norm. Sup. (4e série)6, 133–252 (1973)
Connes, A.: Etats presque périodiques sur une algèbre de von Neumann. C.R. Acad. Sci. Paris A274, 1402–1405 (1972)
Connes, A., Størmer, E.: Entropy for automorphisms of II1 von Neumann algebras. Acta Math.134, 289–306 (1975)
Davies, E. B.: Diffusion for weakly coupled quantum oscillators. Commun. math. Phys.27, 309–325 (1972)
Emch, G. G.: Algebraic methods in statistical mechanics and quantum field theory. New York: J. Wiley-Interscience 1972
Emch, G. G.: Nonabelian specialK-flows. J. Funct. Anal.19, 1–12 (1975);
— The minimalK-flow associated to a quantum diffusion process. In: Physical reality and mathematical description (Ch. Enz, J. Mehra, eds.), pp. 477–493. Dordrecht: Reidel Publ. 1974;
— Positivity of theK-entropy on non-abelianK-flows. Z. Wahrscheinlichkeitstheorie verw. Gebiete29, 241–252 (1974);
— An algebraic approach to the theory ofK-flows andK-entropy. In: Proc. Intern. Symp. Math. Problems in Theor. Phys., Lecture Notes in Physics, No. 39, pp. 315–318. Berlin-Heidelberg-New York: Springer 1979.
AlgebraicK-flows. In: Proc. Intern. Conf. Dynamical Systems in Math. Phys., Rennes, 1975;
Non-equilibrium quantum statistical mechanics, Lectures Notes XV. Internationale Universitätswochen, Schladming, 1976
Herman, R. H., Takesaki, M.: States and automorphism groups of operator algebras. Commun. math. Phys.19, 142–160 (1970)
Hida, T.: Stationary stochastic processes. Princeton: Princeton University Press 1970
Jadczyk, A. Z.: On some groups of automorphisms of von Neumann algebras with cyclic and separating vector. Commun. math. Phys.13, 142–153 (1969)
Khinchin, A.: Mathematical Foundations of Information Theory. New York: Dover 1957
Kovács, I., Szücs, J.: Ergodic type theorems in von Neumann algebras. Acta Sc. Math. (Szeged)27, 233–246 (1966)
Neumann, J. von: Die Eindeutigkeit der Schrödingerschen Operatoren. Math. Ann.104, 570–578 (1931)
Neumann, J. von: Grundlagen der Quantenmechanik. Berlin: Springer 1932
Parry, W.: Entropy and generators in ergodic theory. New York: W. A. Benjamin 1969
Pinsker, M. S.: Dynamical systems with completely positive or zero entropy. Soviet Math.1, 937–938 (1960)
Rohlin, V. A., Sinai, Ya. G.: Construction and properties of invariant measurable partitions. Soviet Math.2, 1611–1614 (1961)
Rudolph, D.: A Two-valued step coding for ergodic flows. Preprint, Hebrew University of Jerusalem, 1976
Shields, P.: The theory of Bernoulli shifts, Chicago Lectures in Mathematics. Chicago: University of Chicago Press 1973
Sinai, Ja. G.: Dynamical systems with countably-multiple Lebesgue spectrum. Am. Math. Soc. Transl. (2)39, 83–110 (1961)
Smorodinsky, M.: Ergodic theory, entropy. Lecture Notes in Mathematics, No. 214. Berlin-Heidelberg-New York: Springer 1971
Takesaki, M.: Tomita's theory of modular Hilbert algebras and its applications. Lecture Notes in Mathematics, No. 128. Berlin-Heidelberg-New York: Springer 1970;
— States and automorphisms of operator algebras. In: Statistical mechanics and mathematical problems (A. Lenard, ed.), Lecture Notes in Physics, No. 20, pp. 205–246. Berlin-Heidelberg-New York: Springer 1973;
— Conditional expectations in von Neumann algebras. J. Funct. Anal.9, 306–321 (1972)
Takesaki, M.: The structure of a von Neumann algebra with periodic homogeneous state. Acta Math.131, 79–121 (1973)
Winnink, M.: An application ofC*-algebras to quantum statistical mechanics of systems in equilibrium. Thesis, Groningen, 1968.
Haag, R., Hugenholtz, N., Winnink, M.: On the equilibrium states in quantum statistical mechanics. Commun. math. Phys.5, 215–236 (1967)
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Communicated by H. Araki
On leave of absence from the Depts. of Mathematics and Physics, The University of Rochester, Rochester, N. Y. 14627, USA
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Emch, G.G. GeneralizedK-flows. Commun.Math. Phys. 49, 191–215 (1976). https://doi.org/10.1007/BF01608727
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DOI: https://doi.org/10.1007/BF01608727