# Events Archive

## 2014

### High Energy Theory Seminar - Christopher Herzog, Stonybrook University - TBA

Mon, May 5, 2014, 2:30 pm to Fri, Apr 18, 2014, 3:30 pm

### High Energy Theory Seminar - Christopher Herzog, Stonybrook University - "Thermal Corrections to Entanglement Entropy for Conformal Field Theory"

Mon, May 5, 2014, 2:30 pm to 3:30 pm

### High Energy Theory Seminar - Alberto Guijosa, National University of Mexico (UNAM) - "Quarks, With Strings Attached"

Fri, May 2, 2014, 1:30 pm to 2:30 pm

Princeton University Visiting Fellow from the Institute of Nuclear Science, National University of Mexico (UNAM)

### Hamilton Colloquium Series - Matthew P.A. Fisher, UC-Santa Barbara, "Quantum Tapestries"

Thu, May 1, 2014, 4:30 pm to 6:00 pm

Within each of nature’s crystals is an exotic quantum world of electrons weaving to and fro. Each crystal has its own unique tapestry, as varied as the crystals themselves. In some crystals the electrons weave an orderly quilt. Within others, the electrons are seemingly entwined in a entangled web of quantum motion.

### Special Condensed Matter Physics Seminar, Ling Lu, "Weyl points and quantum anomalous Hall phase in photonic crystals"

Mon, Apr 28, 2014, 4:00 pm to 5:00 pm

Topological phases and phenomena in photonics have attracted a lot of research interests since the pioneering work by Haldane. In this talk, I will first show our realization of the photonic analog of quantum anomalous Hall effect. At the edge, there exists topologically-protected one-way edge waveguides with Chern numbers of one, two, three and...

### Biophysics Seminar Series - Daniel Needleman (Harvard) "Self-Focusing of the Ran Gradient in Mitosis: Signaling, Mechanics, and Spindle Size"

Mon, Apr 28, 2014, 12:00 pm to 1:00 pm

During spindle assembly, microtubules are highly enriched near chromatin by a process which, in many systems, is driven by the GTPase Ran. The Ran pathway has been proposed to establish a reaction-diffusion network that generates gradients in the behaviors of soluble proteins around chromatin, but the manner in which this happens is poorly...

### High Energy Theory Seminar- IAS - Yu-tin Huang, IAS - “Anomalies and the S-matrix”

Fri, Apr 25, 2014, 1:30 pm to 2:30 pm

### Special Condensed Matter Seminar, Ronny Thomale "The Quest of the Kagome Hubbard Model"

Fri, Apr 25, 2014, 1:30 pm to 2:30 pm

Since its (re-)discovery in the second half of the 20th century, the lattice of corner-sharing triangles called kagome has become one of the paradigmatic models for exotic quantum electronic states of matter.

### High Energy Theory Seminar - Aleksey Cherman, University of Minnesota - "Resurgence in quantum field theory: handling the Devil's invention"

Mon, Apr 21, 2014, 2:30 pm to 3:30 pm

Renormalized perturbation theory for QFTs typically produces divergent series, even when the coupling constant is small, because the series coefficients grow factorially at high order. So in what sense do such divergent series capture the physics of QFTs?

### HET Seminar- Dan Harlow-PCTS-"Inflation after False Vacuum Decay: New Evidence from BICEP2".

Fri, Apr 18, 2014, 1:30 pm to 2:30 pm

### Gravity Group Astrophysics|Cosmology Lunch: Sarah Shandera, "Cosmic Variance, Statistical Naturalness and Non-Gaussianity"

Fri, Apr 18, 2014, 12:00 pm to 1:30 pm

The possibility of measuring or constraining correlations of the primordial curvature fluctuations beyond the power spectrum has opened up promising new avenues to differentiate models of inflation. Interestingly, mode coupling also introduces a new and significant uncertainty in matching observations to theory.

### Hamilton Colloquium Series - Yayu Wang, Tsinghua University, "Quantum Anomalous Hall Effect in Topological Insulators"

Thu, Apr 17, 2014, 4:30 pm to 6:00 pm

The anomalous Hall effect was discovered more than 130 years ago in a ferromagnet, where a Hall resistance exists even in the absence of an external magnetic field. The quantized version of the anomalous Hall effect has attracted much interest since the discovery of quantum Hall effect in the 1980s.

### Special Cosmology Seminar, Clem Pryke "Detection of B-mode Polarization at Degree Angular Scales"

Thu, Apr 17, 2014, 1:30 pm to 3:00 pm

The BICEP2 collaboration recently reported detection of an excess of B-mode power in the polarization pattern of the CMB at few degree angular scales. I will review the experiment and analysis with particular reference to measurement and control of systematics. I will also review the several lines of evidence that the signal is cosmological rather...

### Particle Physics Seminar, Francesco D'Eramo, "Anomaly Mediation from Unbroken Supergravity"

Wed, Apr 16, 2014, 3:00 pm to 5:00 pm

In this talk I will show how the sparticle soft masses generated by anomaly mediation, proportional to the gravitino mass, should be associated to unbroken supersymmetry (SUSY). This counterintuitive result arises because the underlying symmetry structure of (broken) supergravity in flat space is in fact (unbroken) SUSY in anti-de Sitter space.

### High Energy Theory Seminar-"BTZ/CFT" -Raman Sundrum- Uni. of Maryland

Mon, Apr 14, 2014, 2:30 pm to 3:30 pm

### Condensed Matter Seminar, Gil Refael, "Light matters - from Floquet topological insulators to topological polaritons"

Mon, Apr 14, 2014, 1:15 pm to 2:30 pm

In my talk I will present fresh findings on the possibility of producing a topological polariton (nicknamed topolariton) in trivial quantum-wells coupled to extended optical cavities. The idea of a topolariton emerges naturally from the concept of Floquet topological insulators.

### Biophysics Seminar Series - Massimo Vergassola (UCSD) “Finding the needle in a biological haystack”

Mon, Apr 14, 2014, 12:00 pm to 1:00 pm

Early T-cell activation is selected by evolution to discriminate a few foreign peptides rapidly from a vast excess of self-peptides, and it is unclear in quantitative terms how this is possible. It will be discussed how a generic proofreading cascade supplemented by a single negative feedback accounts quantitatively for early T-cell activation,...

### Special Seminar - A quantum computational perspective on quantum physics - Dorit Aharonov, Hebrew University

Fri, Apr 11, 2014, 2:45 pm to 3:45 pm

Quantum computation has taught us that quantum many body systems can be viewed from a computational perspective. This approach to studying quantum systems turns out to lead to a remarkably rich set of insights, ideas and directions to explore. I will try to give a taste of the main achievements in this vibrant fast growing area over the past...

### High Energy Theory Seminar- IAS - Mukund Rangamani, Durham University & IAS, “Effective Actions for Anomalous Hydrodynamics”

Fri, Apr 11, 2014, 1:30 pm to 2:30 pm

In recent years we have come to appreciate that the microscopic dynamics of quantum field theory leave behind indelible signatures in long range, near-equilibrium phenomena. We will describe an effective field theory which captures some of these effects.

### Gravity Group Astrophysics|Cosmology Lunch: Alberto Nicolis, "Icosahedral Inflation"

Fri, Apr 11, 2014, 12:00 pm to 1:30 pm

I will describe "icosahedral inflation”, a generalization of solid inflation in which the fluctuations’ dynamics are not invariant under continuous rotations, but only under the icosahedral subgroup.