Objective "This proposal aims to study the relationship between the spectrum of the Laplacian on a compact hyperbolic surface, and the geometry and dynamics of the geodesic flow on the surface, in the context of the Quantum Unique Ergodicity (QUE) Conjecture--- which asks for the eigenfunctions to become equidistributed in the large eigenvalue limit. It is thought that this question might be related to the problem of bounding multiplicities in the spectrum, and that large degeneracies could hypothetically cause QUE to fail. We investigate this aspect by studying quasimodes, or approximate eigenfunctions, where we have more control over the ``multiplicities"" by adjusting the order of approximation to true eigenfunctions.There are two main objectives in this proposal. First, to solidify the connection between multiplicities and non-equidistribution; in particular, by showing that when the order of the quasimodes is weakened to the appropriate level, the QUE property fails. Second, in contrast, to show that there is variation across different dynamical ``models"" of quantum chaos, in the relationship between large spectral multiplicities and types of localization phenomena.It is hoped that this program will shed light on the role of spectral multiplicities in the QUE problem in particular, and on the mysterious relationship between spectral data of the Laplacian and the geometry and dynamics of the underlying system in general. Since the questions to be studied and the methods to be used cut across many different active research areas, it is likely that this program will lead to diverse collaborations, and contribute to a wide variety of research topics in the future." Fields of science natural sciencesmathematicspure mathematicsarithmeticsnatural sciencesmathematicspure mathematicsgeometry Programme(s) FP7-PEOPLE - Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Topic(s) FP7-PEOPLE-2012-CIG - Marie-Curie Action: "Career Integration Grants" Call for proposal FP7-PEOPLE-2012-CIG See other projects for this call Funding Scheme MC-CIG - Support for training and career development of researcher (CIG) Coordinator BAR ILAN UNIVERSITY EU contribution € 100 000,00 Address BAR ILAN UNIVERSITY CAMPUS 52900 Ramat Gan Israel See on map Activity type Higher or Secondary Education Establishments Administrative Contact Estelle Waise (Ms.) Links Contact the organisation Opens in new window Website Opens in new window Total cost No data
