Events Archive

Events Archive

Condensed Matter Seminar, Stephan Mandt, "Transport and non-equilibrium dynamics in optical lattices: from expanding atomic clouds to negative absolut

Mon, Apr 2, 2012, 1:15 pm to 2:30 pm
Ultracold atoms in optical lattices offer the possibility of exploring transport properties of model Hamiltonians, such as the fermionic Hubbard model. However, here we emphasize that cold atoms can also behave very differently from solids: being e.g. exposed to a gravitational force, a cloud of interacting cold atoms in an optical lattice

Biophysics Seminar Series - David K. Lubensky (U. Michigan)

Mon, Apr 2, 2012, 11:45 am to 1:00 pm
"Planar polarity, epithelial cell packing, and mechanics: Some fishy examples."
Lunch at 11:45, seminar begins at 12.

High Energy Theory Seminar - Jesse Thaler, MIT - "The Two Faces of Anomaly Mediation"

Fri, Mar 30, 2012, 1:30 pm to 2:30 pm
Anomaly mediation is a ubiquitous source of supersymmetry breaking which appears in almost every theory of supergravity. Despite its ubiquity, anomaly mediation has been the source of much theoretical confusion, and the goal of this talk is to demystify aspects of the underlying mechanism.

Gravity Group Astrophysics/Cosmology Lunch

Fri, Mar 30, 2012, 12:00 pm to 1:30 pm
Discussants: Jon Gudmundsson, Neutrinos and the CMB BingKan Xue, Conformal consistency relations for single-field inflation. Emily Grace, TBD

Physics Colloquium, Ana Maria Rey, Jila

Thu, Mar 29, 2012, 4:30 pm to 6:00 pm
Building the most precise atomic clocks in the world by studying many-body physics

Math Phys Seminar: Jeffrey Schenker (IAS) 'Diffusion of wave packets for the Markov Schroedinger equation'

Thu, Mar 29, 2012, 3:00 pm to 4:30 pm
The long time evolution of waves in a homogeneous random environment will be discussed. Proving that the wave amplitude evolves diffusively over any sufficiently long time scales remains an open problem. One obstacle that arises is recurrence -- return of portions of the wave packet to regions previously visited.

Quantum Sciences Seminar - Xuedong Hu, University of Buffalo - Optimizing Electron-spin-cavity coupling via a double quantum dot

Thu, Mar 29, 2012, 2:00 pm to 3:30 pm

We investigate how to couple an electron spin in a semiconductor double quantum dot to a microwave cavity via the electrically driven spin resonance technique. Spin degree of freedom is accessed here through either the spin-orbit interaction or an inhomogeneous magnetic field.

Special Condensed Matter Seminar, Jerome Dubail, "Fractional Quantum Hall Effect: from bulk model wave functions to the edge theory"

Wed, Mar 28, 2012, 3:15 pm to 4:45 pm
Since the seminal contribution of Laughlin in the early 1980s, a large part of the theoretical work on the FQHE has consisted in cooking up new model wave functions for different filling fractions.

Math Phys Seminar: Sourav Chatterjee (Courant Inst. NYU) 'Invariant measures and the soliton resolution conjecture'

Tue, Mar 27, 2012, 3:30 pm to 5:00 pm
The soliton resolution conjecture for the focusing nonlinear Schrodinger equation (NLS) is the vaguely worded claim that a global solution of the NLS, for generic initial data, will eventually resolve into a radiation component that disperses like a linear solution, plus a localized component that behaves like a soliton or multi-soliton solution.

Special Condensed Matter Seminar, Benoit Estienne, "D-Algebra Structure of Topological Insulators"

Tue, Mar 27, 2012, 2:45 pm to 4:00 pm
In the quantum Hall effect, the density operators at different wave-vectors generally do not commute and give rise to the Girvin MacDonald Plazmann (GMP) algebra with important consequences such as ground-state center of mass degeneracy at fractional filling fraction, and W_{1 + \infty} symmetry of the filled Landau levels.

High Energy Theory Informal Seminar - Peng Zhao, University of Cambridge, DAMTP - A 5d/3d duality from relativistic integrable system

Tue, Mar 27, 2012, 12:45 pm to 2:00 pm
I will describe the connection between supersymmetric gauge theories in various dimensions and integrable models based on the ideas of Nekrasov and Shatashvili. Then I will present a 5d/3d duality by relating the theories to the same relativistic integrable system and sketch the proof. This is joint work with Heng-Yu Chen, Nick Dorey and Tim...

High Energy Theory Seminar - Paul Chesler- MIT - Dynamical Hawking radiation and holographic thermalization

Condensed Matter Seminar - Umesh Vazirani, Berkeley, "Testing quantum systems "

Mon, Mar 26, 2012, 1:15 pm to 2:30 pm
Quantum computation teaches us that general quantum quantum systems of n particles exhibit complexity that scales exponentially in n. Can we test whether the output of such a system is consistent with quantum mechanics? For example, is it possible to test whether a claimed implementation of a quantum computer is "really quantum". The difficulty...

Biophysics Seminar Series - Jané Kondev (Brandeis U.) “Regulation of transcriptional noise in bacteria”

Mon, Mar 26, 2012, 11:45 am to 1:00 pm
Genes encoded in the cell's DNA are read by RNA polymerase and converted into messenger RNA in the process of transcription.

High Energy Theory Seminar - Juan Maldacena, IAS - The Quark Anti-Quark Potential in N=4 Super Yang Mills

Gravity Group Astrophysics|Cosmology Lunch "Detecting the Epoch of Reionization and Characterizing the Properties of the First Galaxies"

High Energy Theory Seminar - IAS - Nathan Berkovits,Universidade Estadual Paulista - AdS_5 x S^5 Superstring at Small Radius

High Energy Theory Seminar - Masahito Yamazaki, Princeton University - 3-manifolds from 4d superconformal index

The Computational Challenges of Connectomics

Fri, Mar 16, 2012, 12:00 pm to 1:00 pm
According to a doctrine known as connectionism, brain function and dysfunction depend primarily on patterns of connectivity between neurons. Connectionism has been explored theoretically with mathematical models of neural networks since the 1940s. It has proved difficult to test these models through activity measurements alone.

Princeton University Gravity Group Astrophysics|Cosmology Lunch

Fri, Mar 16, 2012, 12:00 pm to 1:30 pm
We will have three Journal Discussions this Week Fethi M. Ramazanoglu - Black holes in scalar-tensor gravity Theodor Brasoveanu - TBD Sasha Rahlin - TBD