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Cohomological Theory of Dynamical Zeta Functions (Hardcover, 2001 ed.)
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Cohomological Theory of Dynamical Zeta Functions (Hardcover, 2001 ed.)
Series: Progress in Mathematics, 194
Expected to ship within 10 - 15 working days
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The periodic orbits of the geodesic flow of compact locally
symmetric spaces of negative curvature give rise to meromorphic
zeta functions (generalized Selberg zeta functions, Ruelle zeta
functions). The book treats various aspects of the idea to
understand the analytical properties of these zeta functions on the
basis of appropriate analogs of the Lefschetz fixed point formula
in which the periodic orbits of the flow take the place of the
fixed points. According to geometric quantization the Anosov
foliations of the sphere bundle provide a natural source for the
definition of the cohomological data in the Lefschetz formula. The
Lefschetz formula method can be considered as a link between the
automorphic approach (Selberg trace formula) and Ruelle's approach
(transfer operators). It yields a uniform cohomological
characterization of the zeros and poles of the zeta functions and a
new understanding of the functional equations from an index
theoretical point of view. The divisors of the Selberg zeta
functions also admit characterizations in terms of harmonic
currents on the sphere bundle which represent the cohomology
classes in the Lefschetz formulas in the sense of a Hodge theory.
The concept of harmonic currents to be used for that purpose is
introduced here for the first time. Harmonic currents for the
geodesic flow of a noncompact hyperbolic space with a compact
convex core generalize the Patterson-Sullivan measure on the limit
set and are responsible for the zeros and poles of the
corresponding zeta function. The book describes the present state
of the research in a new field on the cutting edge of global
analysis, harmonic analysis and dynamical systems. It should be
appealing notonly to the specialists on zeta functions which will
find their object of favorite interest connected in new ways with
index theory, geometric quantization methods, foliation theory and
representation theory. There are many unsolved problems and the
book hopefully promotes further progress along the lines indicated
here.
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