# Events Archive

## 2013

### Hamilton Colloquium Series - William Young, Scripps Institution of Oceanography, UC, San Diego - "Two Dimensional Turbulence"

Thu, Mar 14, 2013, 4:30 pm to 5:30 pm
In the first part of this talk I will review basic results about two-dimensional turbulence emphasizing the absence of a dissipative anomaly in D=2, and the energy-conserving long-time behavior of solutions of the inviscid equations of motion. Arguments dating back to Onsager predict the formation of an en-semble of vortices separated by potential...

### PCTS/Condensed Matter Seminar - Salvatore R. Manmana, Goettingen University - Far-from-Equilibrium Quantum Magnetism with Ultracold Polar Molecules

Thu, Mar 14, 2013, 1:15 pm to 2:30 pm
Recent theory has indicated how to emulate tunable models of quantum magnetism with ultracold polar molecules.

### Special Condensed Matter Seminar-Roman Lutchyn, Microsoft Sta. Q, UC, SB - Majorana zero-energy modes in semiconductor/superconductor heterostructures

Wed, Mar 13, 2013, 1:15 pm to 2:30 pm
The exploration of topological phases of matter is one of the main challenges in condensed matter physics. Among the exciting recent developments in this direction are the discoveries of new phases of matter with many intriguing properties, such as topological insulators and superconductors.

### High Energy Theory Seminar Informal - IAS - Seok Kim, Seoul National University - “M5-brane Indices from 5d Gauge Theories”

Tue, Mar 12, 2013, 1:30 pm to 3:00 pm
I will talk about the index which counts BPS local operators ofthe 6d (2,0) theory, calculated from gauge theories on the 5-sphere.

### High Energy Theory Seminar - IAS - Dieter Luest, Max-Planck-Institute for Physics, Munich - “Closed Strings and Non-Commutative/Non-Associative Ge

Mon, Mar 11, 2013, 2:30 pm to 4:00 pm
In this talk I discuss that non-commutative and non-associative geometry emerges for closed stringsmoving in non-geometric backgrounds. The origin of closed string non-commutativity (non-associativity)is due to new closed string boundary conditions in the presence of non-geometric background fields.

### Henrik Flyvbjerg (Danish Technical University) "Optimal estimation of diffusion coefficients from noisy single-particle trajectories"

Mon, Mar 11, 2013, 12:00 pm to 1:00 pm
Einstein argued in 1905 that the mean squared displacement of a microscopic particle suspended in a fluid at rest is proportional to time with the constant of proportionality giving the particle's
Audience: Physics faculty, post docs, grads

### Towards a Predictive Science of Network-Based Systems - Dani Bassett - UCSB

Fri, Mar 8, 2013, 1:30 pm to 2:30 pm
Abstract: Many real world systems utilize networks of mechanical, electrical, or informational signals to perform complex functions.

### Hamilton Colloquium Series - Ignacio Cirac, Max-Planck Institute for Quantum Optics - "Dissipation as a New Tool in Quantum Information Science"

Thu, Mar 7, 2013, 4:30 pm to 5:30 pm

Quantum entanglement, the most striking feature of quantum mechanics, is also the basic ingredient in most applications in the field of quantum information. Unfortunately, it is very fragile: in all experiments so far the coupling of the systems to the environment has lead to dissipation which either destroys entanglement or prevents its...

### Mathematical Physics Seminar - Antti Knowles, Courant Institute - Quantum diffusion and delocalization for random band matrices

Tue, Mar 5, 2013, 4:30 pm to 6:00 pm
I give a summary of recent progress in establishing the diffusion approximation for random band matrices. We obtain a rigorous derivation of the diffusion profile in the regime W > N^{4/5}, where W is the band width and N the dimension of the matrix. As a corollary, we prove complete delocalization of the eigenvectors.

### Condensed Matter Seminar - Collin Broholm, The Johns Hopkins University - "Continuum Excitations in Crystalline Magnets"

Mon, Mar 4, 2013, 1:15 pm to 2:30 pm
I present inelastic neutron scattering data from one- two- and three-dimensional insulating magnetic materials at low temperatures that do not display a coherent resonant mode of excitation. Instead, momentum resolved spectra take the form of bounded continua. I interpret the spectra as evidence for fractionalization of a spin flip into distinct...

### Sebastian Maerkl, EPFL Lausanne "Large-scale single cell analysis"

Mon, Mar 4, 2013, 12:00 pm to 1:00 pm
Observing cellular responses to perturbations is central to generating and testing hypothesis in biology. Time-lapse microscopy is a powerful tool for studying cellular phenotypes, but has been refractory to proteome-wide investigations.
Audience: Physics faculty, post docs, grads

### High Energy Theory Seminar - Enrico Pajer, Princeton University - The Effective Field Theory of Large Scale Structures

Fri, Mar 1, 2013, 1:30 pm to 3:00 pm
Abstract: An analytical understanding of large-scale matter inhomogeneities is an important cornerstone of our cosmological model an helps us interpreting current and future data.

### Hamilton Colloquium Series - Abhay Pasupathy, Columbia University, "What drives electronic nematicity in the iron-based superconductors?"

Thu, Feb 28, 2013, 4:30 pm to 5:30 pm
The iron arsenides are a recently discovered class of unconventional superconducting materials. This class of materials consists of various families (cryptically called 111, 122, 1111, etc.) each of which has a "parent" compound. These parent compounds (e.g. NaFeAs) are typically not superconducting, but display a spin-density wave phase at low...

### High Energy Theory Seminar - Bertrand Duplantier, Institute for Theoretical Physics, Saclay - Schramm-Loewner Evolution and Liouville Quantum Gravity

Wed, Feb 27, 2013, 3:30 pm to 4:30 pm
Liouville quantum gravity in two dimensions is described by the random Riemannian manifold'' obtained by changing the Lebesgue measure in the plane by a random conformal factor, the exponential of the Gaussian free field.

### Cancelled: Math Physics Seminar - Jakob Yngvason, University of Vienna - Interacting Bosons in a Random Potential

Tue, Feb 26, 2013, 4:30 pm to 6:00 pm
We study the effects of random scatterers on the ground state of the one-dimensional Lieb-Liniger model of interacting bosons in the Gross-Pitaevskii regime.