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Spectral gap properties for random walks on homogeneous spaces: examples and consequences

Spectral gap properties for random walks on homogeneous spaces: examples and consequences

Released Tuesday, 15th July 2014
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Spectral gap properties for random walks on homogeneous spaces: examples and consequences

Spectral gap properties for random walks on homogeneous spaces: examples and consequences

Spectral gap properties for random walks on homogeneous spaces: examples and consequences

Spectral gap properties for random walks on homogeneous spaces: examples and consequences

Tuesday, 15th July 2014
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Guivarch, Y (Université de Rennes 1)Friday 04 July 2014, 11:30-12:20

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In the last decade there have been several important breakthroughs in Number Theory and Diophantine Geometry, where progress on long-standing open problems has been achieved by utilising ideas originated in the theory of dynamical systems on homogeneous spaces. Dynamical systems techniques are applicable to a wide range of number-theoretic objects that have many symmetries. In particular:various question in Diophantine approximation have been studied using recurrence properties of flows on the space of unimodular latticesdiagonal flows have played an important role in recent advances on quantum chaos and in the proof of the quantum unique ergodicity conjecture for arithmetic surfacesflows on homogeneous spaces of nilpotent groups have been used to produce new estimates on exponential sums and to study prime solutions of systems of linear equationsthe distribution of periodic orbits is connected to behaviour of period integrals of automorphic forms and to the problem of establishing subconvexity bounds for L-functionsThe aim of this programme is to bring together researchers working in Number Theory and Homogeneous Dynamics to discuss the recent developments and open problems that lie at the crossroads of these fields and to encourage more interaction among people working in these diverse areas.

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