Events Archive

2014

Biophysics Seminar - Surya Ganguli (Stanford)

Mon, Oct 13, 2014, 12:00 pm to 1:00 pm
“The functional contribution of synaptic complexity to learning and memory”

Particle Physics Seminar, Mikhail Solon, U of Chicago, "Standard Model anatomy of WIMP observables"

Fri, Oct 10, 2014, 4:00 pm to 5:00 pm
Given the multitude of WIMP candidates and search strategies, it is imperative to develop theoretical formalism to delineate the possible interactions of dark matter with known particles, making clear which uncertainties are inherently model dependent and which can, at least in principle, be improved by further Standard Model analysis.

High Energy Theory Seminar- Itamar Yaakov, Princeton University - "Generalized indices for N=1 theories in four-dimensions"

Fri, Oct 10, 2014, 1:45 pm to 3:00 pm
“I’ll describe how to define and compute Euclidean partition functions of 4d N=1 theories on spaces that look like a circle times a simple three manifold. These partition functions can be interpreted as supersymmetric indices: supertraces over the Hilbert space resulting from quantizing the theory on the three manifold, analogous to the Witten...

Gravity Group Lunch Seminar, Robert Caldwell, "Chiral Gravitational Dynamics in the Early Universe"

Fri, Oct 10, 2014, 12:00 pm to 1:30 pm

I present a toy cosmological model that breaks the symmetry between left and right-handed gravitational waves. The possible implications for the gravitational wave and cosmic microwave backgrounds are explored. In the end, it all comes down to spinning tops.

Hamilton Colloquium Series- Leslie Rosenberg, University of Washington, "Searching for Dark-Matter Axions"

Thu, Oct 9, 2014, 4:30 pm to 6:00 pm

The axion is a hypothetical elementary particle whose existence would explain the baffling absence of CP violation in strong interactions. Axions also happen to be a compelling dark-matter candidate. Even if dark-matter axions were to comprise the overwhelming majority of mass in the universe, they would be extraordinarily difficult to detect...

High Energy Theory Seminar- Mirjam Cvetic, U. of Pennsylvania, "Non-extremal Black Holes and Conformal Invariance"

Mon, Oct 6, 2014, 2:30 pm to 3:30 pm
We review recent progress that sheds light on the origin of conformal symmetry for general multi-charged rotating black holes both in four and five dimensions. We show that the asymptotic boundary conditions of these general asymptotically flat black holes can be modified such that a conformal symmetry emerges.

Biophysics Seminar, Timothy O'Leary (Brandeis) "Stable neural function from sloppy underlying components".

Mon, Oct 6, 2014, 12:00 pm to 1:00 pm

Catered lunch at 11:45, talk begins at 12 noon.

Particle Physics Seminar, David Shih, Rutgers, "The SUSY Flavor Problem in EGMSB and Beyond"

Fri, Oct 3, 2014, 4:00 pm to 5:00 pm
The 125 GeV Higgs has motivated the study of SUSY models for large A-terms, in particular extended GMSB models with direct superpotential interactions between the messengers and MSSM fields. In this talk, I will describe an analysis of the flavor constraints on such models.

High Energy Theory Seminar- IAS - Takemichi Okui, Florida State U. - “An Explanation of the WW Excess at the LHC by Jet-veto (and pi^2) Resummation

Gravity Group Lunch Seminar, Paul Steinhardt, "Recent progress in bouncing cosmologies"

Hamilton Colloquium Series- David Huse, Princeton University, "Quantum thermalization, many-body Anderson localization, and the entanglement frontier"

Thu, Oct 2, 2014, 4:30 pm to 6:00 pm

Progress in physics and quantum information science motivates much recent study of the behavior of extensively-entangled many-body quantum systems fully isolated from their environment, and thus undergoing unitary time evolution. What does it mean for such a system to go to thermal equilibrium?

HET Seminar- IAS- Anton Kapustin, Caltech: Simons Center for Geometry & Physics, Stony Brook "Short-Range Entangled Phases and Topology"

Mon, Sep 29, 2014, 2:30 pm to 3:30 pm
Recently a new and rather unexpected connection betweencondensed matter physics and algebraic topology has been noted. Namely, it appears that phases of matter with an energy gap, no long-range entanglement, and fixed symmetrycan be classified using cobordism theory. I will exhibit several examples of this connection and describe a possible...

Particle Physics Seminar, Brian Henning, Berkeley, "What do precision Higgs measurements buy us?"

Fri, Sep 26, 2014, 4:00 pm to 5:00 pm
The exciting discovery of the Higgs boson finally gives us a chance to experimentally probe the strangest particle in the Standard Model. At the forefront of questions is whether or not there is new physics beyond the Standard Model that explains the unnatural and mysterious properties of the Higgs boson.

High Energy Theory Seminar - Aron Wall-IAS -Quantum Extremal Surfaces

Luis Lehner, "Turbulent black holes, through holography to the real world"

Math Physics Seminar: Amir Dembo, "Statistical Mechanics on Sparse Random Graphs: Mathematical Perspective"

Tue, Sep 23, 2014, 4:30 pm to 5:30 pm
Theoretical physics studies of disordered materials lead to challenging mathematical problems with applications to random combinatorial problems and coding theory. The underlying structure is that of many discrete variables that are strongly interacting according to a mean field model determined by a random sparse graph.

High Energy Theory Seminar- Kristan Jensen, Stony Brook, “Galilean fields in curved spacetime”

Mon, Sep 22, 2014, 2:30 pm to 3:30 pm
I will discuss various aspects of non-relativistic field theories on a curved, background spacetime. First things first, we need to know what sort of geometry these theories couple to, as well as the symmetries we ought to impose.

Special Condensed Matter Seminar - Peng Cai, Tsinghua University, "Electronic Structure Evolution of Lightly Doped Cuprates Revealed by STM"

Mon, Sep 22, 2014, 1:15 pm to 2:15 pm
One of the key issues regarding the cuprate high temperature superconductors is the evolution of the electronic structure when charge carriers are doped into the parent Mott insulator. We have performed scanning tunneling microscopy studies on the parent Ca2CuO2Cl2 Mott insulator and severely underdoped Bi2Sr2-xLaxCuO6 in the antiferromagnetic...

Biophysics Seminar - Wolfgang Losert - U. Maryland

Mon, Sep 22, 2014, 12:00 pm to 1:00 pm
“Follow the wave - a dynamic mechanism for contact guidance and collective cell migration.”
Lunch @ 11:45,seminar 12-1:00

Particle Physics Seminar, William Shepard, "Wavelet Techniques for Jet Substructure"

Fri, Sep 19, 2014, 4:00 pm to 5:30 pm
Jet substructure techniques have great promise for improving the sensitivity of collider analyses, particularly searches for boosted decaying particles. I present a recent algorithm inspired by image processing techniques for the identification of boosted decaying SM bosons.

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