# Events Archive

## 2013

### HET Seminar-IAS-Amihay Hanany, Imperial College London, Hilbert Series for the Coulomb Branch of N=4 Supersymmetric Gauge Theories in 3 Dimensions

Tue, Oct 29, 2013, 1:30 pm to 2:30 pm
This paper addresses a long standing problem - to identify the chiral ring and moduli space on the Coulomb branch of an N = 4 superconformal field theory in 2+1 dimensions. Previous techniques involved a computation of the metric on the moduli space and/or mirror symmetry.

### High Energy Theory Seminar - IAS - Dam Thanh Son, University of Chicago - “The Geometry of the Quantum Hall Effect”

Mon, Oct 28, 2013, 2:30 pm to 3:30 pm
We show how a diffeomorphism invariance of the quantum Hall systems, together with topological consideration, put strong constraints on the physics that goes beyond the Chern-Simons action. We show how the Hall conductivity at finite wavenumbers is constrained. We also derive new sum rules that govern the spectrum of low-energy excitations in a...

### High Energy Theory Seminar - Rakibur Rahman, Université Libre de Bruxelles - "Gravitating Higher-Spin Fermions"

Fri, Oct 25, 2013, 1:30 pm to 2:30 pm
We investigate the cubic interactions of a massless higher-spin fermion with gravity in flat space and present covariant 2-s-s vertices, compatible with the gauge symmetries of the system, preserving parity. This explicit construction relies on the BRST deformation scheme that assumes locality and Poincaré invariance.

### Biophysics Seminar Series - Michale Fee (With Neuro)

Fri, Oct 25, 2013, 12:00 pm to 1:00 pm
"Neural mechanisms underlying the sequencing of complex learned behaviors"
Lunch @11:45. NOTE: This talk is in partnership with Neuroscience and will take place on Friday 10/25 - an exception to the usual Monday Biophysics seminar day.

### Hamilton Colloquium Series - Shiraz Minwalla, Tata Institute of Fundamental Research - Mumbai, India: "The Fluid Gravity Correspondence"

Thu, Oct 24, 2013, 4:30 pm to 5:30 pm
I will demonstrate that a class of solutions to Einstein’s equations with a negative cosmological constant in $d+1$ dimensions are in one-to-one correspondence with solutions of the equations of hydrodynamics (relativistic generalizations of the Navier Stokes equations) in $d$ dimensions.

### High Energy Theory Seminar - IAS - Peter Graham, Stanford University - “Axion Detection with NMR”

Mon, Oct 21, 2013, 2:30 pm to 3:30 pm
The axion is a well-motivated dark matter candidate, but is challenging to search for. We propose a new way to search for QCD axion and axion-like-particle (ALP) dark matter. Nuclei that are interacting with the background axion dark matter acquire time-varying CP-odd nuclear moments such as an electric dipole moment.

### Biophysics Seminar Series - Pankaj Mehta (BU)

Mon, Oct 21, 2013, 12:00 pm to 1:00 pm
“Rationally-designed cellular reprogramming protocols from epigenetic landscapes”
Lunch @11:45.

### Many Minds, Many Stripes

Fri, Oct 18, 2013, 4:00 pm to 6:00 pm

### Hamilton Colloquium Series - Risa Wechsler, Kavli Institute, Stanford University: "Dark Matter Insights from Cosmological Structure Formation"

Thu, Oct 17, 2013, 4:30 pm to 5:30 pm
There is now overwhelming evidence that more than eighty percent of the mass in the Universe is dark matter. This provides a clear indication for the existence of a particle or particles beyond the standard model, but we have yet to determine the nature of this particle.

### Math Physics Seminar, Yoshiko Ogata, "The Quantum Shannon-McMillan theorem and rank of spectral projections of macroscopic observables"

Tue, Oct 15, 2013, 4:30 pm to 5:30 pm
The classical Shannon-McMillan theorem states that an ergodic system has typical sets satisfying the asymptotic equipartition property. This theorem demonstrates the significance of entropy which gives the size of the typical sets.

### High Energy Theory Seminar - Mark Mezei, MIT - "Monopole Taxonomy in Three-Dimensional Conformal Field Theories"

Mon, Oct 14, 2013, 2:30 pm to 3:30 pm
Monopole operators play an important role in the dynamics of three-dimensional conformal field theories. In this talk, I will explain how to use the 1/N_f expansion to study these operators at the infrared fixed points of non-Abelian gauge theories with N_f fermion flavors.

### Biophysics Seminar Series - Sarah Veatch (U. Mich)

Mon, Oct 14, 2013, 12:00 pm to 1:00 pm
'Lipid rafts reach a critical point'
Lunch @11:45.

### Hamilton Colloquium Series - Will Happer, Princeton University: "Why Has There Been No Global Warming For The Past Decade?"

Thu, Oct 10, 2013, 4:30 pm to 5:30 pm
The temperature of the Earth's surface has not changed by more than 0.1 C since the year 2000, and it may even have cooled slightly. Most computer models predicted that the increase of CO2, from about 370 to 400 ppm during that period, should have caused a warming of around 0.3 C.

### Informal Phenomenology Seminar - IAS - Murayama, Kavli IPMU, Japan - “What's wrong with Goldstone?”

Wed, Oct 9, 2013, 1:30 pm to 2:30 pm
Spontaneous Symmetry Breaking is a very universal concept applicable for a wide range of subjects: crystal, superfluid, neutron stars, Higgs boson, magnets, and many others. Yet there is a variety in the spectrum of gapless excitations even when the symmetry breaking patterns are the same.

### High Energy Theory Seminar - IAS - Pedro Vieira, Perimeter Institute - “Space-Time S-matrix and Flux-Tube S-matrix”

Mon, Oct 7, 2013, 2:30 pm to 3:30 pm
In planar N=4 Super-Yang-Mills theory there is a map between gluons scattering amplitudes and null polygonal Wilson loops. This remarkable duality allows one to make an important step forward by Operator-Product-Expanding the scattering amplitudes.