# Events Archive

## 2016

### Math Physics Seminar, Roderich Tumulka, Rutgers U., "Probability Distribution of the Time at Which an Ideal Detector Clicks"

Tue, Apr 26, 2016, 4:30 pm to 5:30 pm

We consider a non-relativistic quantum particle surrounded by a detecting surface and ask how to compute, from the particle's initial wave function, the probability distribution of the time and place at which the particle gets detected.

### High Energy Theory Seminar IAS - Washington Taylor, MIT - “Elliptic Calabi-Yau Manifolds and the F-theory Landscape”

Mon, Apr 25, 2016, 2:30 pm to 3:30 pm

This talk will describe recent work on the classification of elliptic Calabi-Yau threefolds and fourfolds, and consequences for the physics of supersymmetric F-theory vacua.

### Biophysics Seminar - Sandeep Robert Datta, Harvard "Linking Sensation to Action in the Olfactory System"

Mon, Apr 25, 2016, 12:00 pm to 1:00 pm

The Datta lab studies how information from the outside world is detected, encoded in the brain, and transformed into meaningful behavioral outputs. We address this fundamental problem by characterizing the olfactory system, the sensory system used by most animals to interact with their environment.

### High Energy Theory Seminar - Andrei Smilga - Subatech Research Lab - "Ultraviolet structure of 6D sypersymmetric gauge theories"

Fri, Apr 22, 2016, 1:45 pm to 3:00 pm

N=8 supergravity is not renormalizable. This means the presense of power divergences in the amplitudes.
There are also logarithmic divergences that multiply higher-dimensional counterterms. In all probability, the latter
appear starting from the 7-th or maybe from the 8-th loop. Supergravity is extremely complicated,

### Gravity Group Seminar, Nick Battaglia (Princeton University), "Weak lensing mass calibration of SZ selected clusters from ACT"

Fri, Apr 22, 2016, 12:00 pm to 1:00 pm

Maria Salatino(Princeton University), "Cold-Electron Bolometers for playing with the CMB"

Meet at 11:30 am at long table in PCTS to meet with speaker. There will be a short talk by Maria Salatino, Princeton University. See web site for information on placing food order

Meet at 11:30 am at long table in PCTS to meet with speaker. There will be a short talk by Maria Salatino, Princeton University. See web site for information on placing food order

### Hamilton Colloquium Series - Harald Hess, HHMI Janelia Research Campus: "Innovating Microscopy: From Atoms to Biology"

Thu, Apr 21, 2016, 4:30 pm to 6:00 pm

Microscopy has played important roles in revealing new insight in diverse fields of research ranging from physics to biology. It likewise is an important component of controlling nano-scale structures in the semiconductor industry.

### Physics Group Meeting IAS - Discussion Group led by Abhijit Gadde, Member IAS - “Conformal Constraints on Defects”

Wed, Apr 20, 2016, 1:30 pm to 2:30 pm

In this talk I will explore the constraints imposed by conformal invariance on defects in a conformal field theory. Correlation function of a conformal defect with a bulk local operator is fixed by conformal invariance up to an overall constant. This gives rise to the notion of defect expansion, where the defect itself is expanded in terms of...

### Math Physics Seminar, Phil Sosoe, Harvard, "Sharp quasi-invariance for the 4th order nonlinear Schroedinger equation"

Tue, Apr 19, 2016, 4:30 pm to 5:30 pm

Starting with the work of Lebowitz-Rose-Speer in 1988, there has been great interest and significant progress in establishing invariance of certain Gibbs-type measures with respect to dispersive equations in 1 and 2 dimensions.

### Pheno & Vino Seminar, Fiorenza Donato, U of Torino, "Dark matter and the cosmic radiation"

Tue, Apr 19, 2016, 4:00 pm to 5:30 pm

A viable method for inspecting the presence of Dark Matter particles in our Galaxy is the search for an annihilation signal in the cosmic radiation, and in particular in the rare antimatter fluxes as well as in gamma rays from different regions of sky.

### High Energy Theory - Howard Schnitzer, Brandeis University - " Renyi Entropy for the SU(N)_1 WZW model on the torus"

Mon, Apr 18, 2016, 2:30 pm to 3:30 pm

"The SU(N)_1 WZW model is constructed on a n-sheeted branched torus, which allows for the investigation of the Renyi entropy for a single interval at finite temperature . Issues relevant for bose-fermi equivalence and Renyi entropy for theories with gauge fields will be discussed"

### Condensed Matter Seminar, Qimiao Si, Rice U., "Frustrated Magnetism and Superconductivity in Iron Pnictides and Chalcogenides"

Mon, Apr 18, 2016, 1:15 pm to 2:30 pm

This talk will provide a brief overview of the field of the iron-based superconductivity (FeSC), and discuss several topical issues. In the beginning of the field, iron pnictides were the focus of attention.

### Biophysics Seminar - John F. Brady, Caltech "The Swim Pressure of Active Matter"

Mon, Apr 18, 2016, 12:00 pm to 1:00 pm

One of the distinguishing features of many living systems is their ability to move, to self-propel, to be active. Through their motion, either voluntarily or involuntarily, living systems are able self-assemble: birds flock, fish school, bacteria swarm, etc. But such behavior is not limited to living systems.

### Special Event - Physics Recital

### High Energy Theory Seminar - Mark Mezei, Princeton University - "Spread of entanglement and chaos"

Fri, Apr 15, 2016, 1:45 pm to 3:00 pm

A global quench is an interesting setting where we can study thermalization of subsystems in a pure state. We investigate the spread of entanglement following a global quench in holography, toy models, and free field theory.

### Gravity Group Seminar, Amber Miller (Columbia University) "EBEX - What we have learned, a surprise, and what comes next"

Fri, Apr 15, 2016, 12:00 pm to 1:00 pm

### Hamilton Colloquium Series - Vladan Vuletic, MIT: "What does the Golden Ratio have to do with friction? An answer atom by atom."

Thu, Apr 14, 2016, 4:30 pm to 6:00 pm

Friction is the basic, ubiquitous mechanical interaction between two surfaces that results in resistance to motion and energy dissipation. To test long-standing atomistic models of friction processes at the nanoscale, we have implemented a synthetic nanofriction interface using laser cooled ions subject to the periodic potential of an optical...

### Physics Group Meeting IAS - Discussion Group led by Dionysios Anninos, Member IAS - “Replica Symmetry Breaking”

Wed, Apr 13, 2016, 1:30 pm to 2:30 pm

Abstract:

### Pheno & Vino, Ken Van Tilburg, Stanford, "Searching for light scalar dark matter with rods and clocks"

Tue, Apr 12, 2016, 4:00 pm to 5:30 pm

If the dark matter is made up of a bosonic particle, it can be ultralight, with a mass potentially much below 1 eV. Moduli fields, whose values could set couplings and masses of known particles, are good candidates for such light dark matter.

### Seminar - Claudia Felser, Max Planck (Dresden), “Heusler compounds: Tunable materials with non-trivial topologies”

Mon, Apr 11, 2016, 4:30 pm to 5:30 pm

Event Location:
Taylor Auditorium, Frick Chemistry Laboratory

### High Energy Theory Seminar IAS - Chong Wang, Harvard University -“Charge-vortex duality and Dirac Fermions in (2+1)d”

Mon, Apr 11, 2016, 2:30 pm to 3:30 pm

There is an interesting duality in (2+1)d between theories of interacting bosons and U(1) gauge theories with bosonic charge, also known as charge-vortex duality. This duality is very useful for theoretically accessing various strongly interacting phases of matter, which I will briefly describe.