# Events Archive

## Events Archive

### Aldo Antognini, Max Planck Institut fur Quantenoptik and ETH,"The proton radius puzzle"

Thu, Oct 28, 2010, 4:30 pm to 6:00 pm
At the Paul Scherrer Institute, Switzerland, we have recently measured the 2S-2P transition frequency (Lamb shift) in muonic hydrogen with 15 ppm precision by means of laser spectroscopy. From this measurement we have determined the rms charge radius of the proton.

### David Ruelle, IHES, France

Wed, Oct 27, 2010, 2:00 pm to Fri, Oct 8, 2010, 6:00 pm
Title: Characterization of Lee-Yang polynomials Abstract: I shall give a characterization of the multi-affine polynomials in n variables that occur in the proof of the Lee-Yang Circle Theorem.

### David Ruelle, IHES, France

Wed, Oct 27, 2010, 2:00 pm to 6:00 pm
Title: Characterization of Lee-Yang polynomials AAbstract: I shall give a characterization of the multi-affine polynomials in n variables that occur in the proof of the Lee-Yang Circle Theorem.

### Idan Oren (The Weizmann Institute) Trace Formulas for Large Random d-Regular Graphs

Tue, Oct 26, 2010, 4:30 pm to Sun, Sep 26, 2010, 6:30 pm
Trace formulas for d-regular graphs are derived and used to express the spectral density in terms of the periodic walks on the graphs under consideration. The trace formulas depend on a parameter (w) which can be tuned continuously to assign different weights to different periodic orbit contributions.

### Idan Oren (The Weizmann Institute) "Trace Formulas for Large Random d-Regular Graphs"

Tue, Oct 26, 2010, 4:30 pm to 6:30 pm
Trace formulas for d-regular graphs are derived and used to express the spectral density in terms of the periodic walks on the graphs under consideration. The trace formulas depend on a parameter (w) which can be tuned continuously to assign different weights to different periodic orbit contributions.

### John Davey

Tue, Oct 26, 2010, 12:40 pm to 1:40 pm
Speaker: John Davey Imperial college, London Title: Orbifolds and Partition Functions Abstract: I will present some methods that have been developed to construct and enumerate abelian orbifolds of complex spaces. I will also talk about some of the number theoretic ideas that have helped us tackle this problem.

### Antal Jevicki

Mon, Oct 25, 2010, 2:45 pm to 4:15 pm
Speaker: Antal Jevicki Affiliation: Brown Title: COLLECTIVE FIELD MAPPING OF HIGHER SPIN ADS GRAVITY

### Ian Spielman, NIST

Mon, Oct 25, 2010, 1:15 pm to 6:00 pm
Title: "A Bose-Einstein condensate subject to synthetic gauge fields"

### Paul Chesler

Fri, Oct 22, 2010, 3:30 pm to 4:30 pm
Speaker: Paul Chesler (MIT) Title: Holography and the collision of gravitational waves in asymptotically AdS_5 Abstract:

### Daniel Jafferis

Fri, Oct 22, 2010, 1:30 pm to 3:00 pm
Speaker: Daniel Jafferis Affiliation: IAS Title: The Exact Superconformal R-symmetry in 3d Extremizes Z

### Ofer Firstenberg

Fri, Oct 22, 2010, 12:30 pm to 1:30 pm
Speaker: Ofer Firstenberg Affiliation: Technion-Israel Institute of Technology Title: Diffusion and Diffraction of Polaritons in Atomic Media Abstract: We investigate the non-local optical response in a medium of diffusing atoms. The two-photon spectra exhibit motional broadening and narrowing

### Marc Mezard, CNRS - Université Paris Sud-"Glassy phase transitions in hard computer science problems"

Thu, Oct 21, 2010, 4:30 pm to 6:00 pm
Given a large set of discrete variables, and some constraints between them, is there a way to choose the variables so that all constraints are satisfied?This "satisfiability" problem is one of the most fundamental complex optimization problems. It also has very concrete applications, for instance in computer chip testing or in error correcting...

### Stefano Olla, Universite Paris-Dauphine

Wed, Oct 20, 2010, 2:00 pm to 6:00 pm
Title: From microscopic hamiltonian dynamics to heat equation Abstract: One of the main problems in non-equilibrium statistical mechanics is to derive, by space-time rescaling, macroscopic irreversible diffusive evolution for the co nserved quantities of an

### Victor Acosta

Tue, Oct 19, 2010, 2:00 pm to 3:30 pm
Speaker: Victor Acosta Affiliation: Berkeley Title: Broadband, picotesla-scale magnetometry with diamond NV centers Abstract: TBA

### Visual Inference Amid Fixational Eye Movements Yoram Burak Center for Brain Science, Harvard University

Mon, Oct 18, 2010, 11:45 pm to 1:00 pm
Our visual system is capable of inferring the structure of 2-d images at a resolution comparable (or, in some tasks, greatly exceeding) the receptive field size of individual retinal ganglion cells (RGCs).

### Marcos Marino

Mon, Oct 18, 2010, 2:30 pm to 4:00 pm
Speaker: Marcos Marino Affiliation: Universite de Geneve Title: From Weak to Strong Coupling in ABJM Theory

### Errors, Negligence and Misconduct - Curt Callan

Fri, Oct 15, 2010, 3:30 pm to 6:00 pm

Audience: First & Second Year Graduate Students

### Oliver Schlotterer

Fri, Oct 15, 2010, 1:30 pm to 3:00 pm
Speaker: Oliver Schlotterer Max Planck Institute, Munich Title: Gauge multiplet tree amplitudes in pure spinor superspace Abstract:

### Marcelo Magnasco, Rockefeller University "Learning to be critical"

Thu, Oct 14, 2010, 4:30 pm to 6:00 pm
We hypothesize that many large-scale biological networks organize themselves to operate in a dynamical regime where extensively many (in the thermodynamic sense) degrees of freedom poise themselves'' at the edge of a dynamical instability; we further hypothesize such dynamical criticality underlies the ability of the system to propagate...