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Homogenous dynamics, arithmetic and equidistribution

Project description

Building a two-way bridge between the study of dynamical and non-dynamical systems

Dynamical systems theory is used to describe the behaviour of complex dynamical systems, studying the nature of the equations of motion of physical systems, such as planetary orbits. But how could non-dynamical systems, for instance arithmetic objects like integer points, be studied using the theory of dynamical systems? The answer is homogeneous dynamics, and the connection goes both ways. The EU-funded HomDyn project was established to extend the tools used in dynamical systems to the study of non-dynamical objects. Researchers will probe the connection between homogeneous dynamics and number theory, arithmetic combinatorics and spectral theory.

Objective

We consider the dynamics of actions on homogeneous spaces of algebraic groups,
and propose to tackle a wide range of problems in the area, including the central open problems.

One main focus in our proposal is the study of the intriguing and somewhat subtle rigidity properties of higher rank diagonal actions. We plan to develop new tools to study invariant measures for such actions, including the zero entropy case, and in particular Furstenberg's Conjecture about $times 2,times 3$-invariant measures on $R / Z$.

A second main focus is on obtaining quantitative and effective equidistribution and density results for unipotent flows, with emphasis on obtaining results with a polynomial error term.

One important ingredient in our study of both diagonalizable and unipotent actions is arithmetic combinatorics.
Interconnections between these subjects and arithmetic equidistribution properties, Diophantine approximations and automorphic forms will be pursued.

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Programme(s)

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Topic(s)

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Funding Scheme

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ERC-ADG - Advanced Grant

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Call for proposal

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(opens in new window) ERC-2018-ADG

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Host institution

THE HEBREW UNIVERSITY OF JERUSALEM
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 2 090 625,00
Address
EDMOND J SAFRA CAMPUS GIVAT RAM
91904 JERUSALEM
Israel

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Activity type
Higher or Secondary Education Establishments
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Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 2 090 625,00

Beneficiaries (1)

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