# Events Archive

## 2013

### Hamilton Colloquium Series - Joseph Polchinski, KITP, University of California-Santa Barbara: "The Black Hole Information Paradox: Alive and Kicking"

Thu, Nov 21, 2013, 4:30 pm to 5:30 pm

Thought experiments have played an important role in figuring out the laws of physics. For the unification of quantum mechanics and gravity, where the phenomena take place in extreme regimes, they are even more crucial.

### Particle AstrophysicsSeminar: Flavio Gatti, University of Genova, "New Developments on Direct Neutrino Mass Searches"

Thu, Nov 21, 2013, 2:00 pm to 3:00 pm

Although the neutrino mass-flavor PMNS mixing matrix and the splittings among masses have been adequately assessed, the absolute mass scale is yet unknown. Further, the discovery of Higgs boson opens new pathways for theoretical investigations on the origin of the neutrino masses.

### Condensed Matter Lunch Seminar: A. Alexandradinata, "Topological Semimetals with Cnv Symmetry" & M. Neupane "Topo. Kondo Insulators"

Wed, Nov 20, 2013, 12:00 pm to 1:30 pm

Abstacts not available for these talks.

### Informal HET Seminar - Vladimir Rosenhaus, UC Berkeley - "AdS/CFT and the Black Hole Exterior"

Tue, Nov 19, 2013, 2:00 pm to 3:00 pm

:"In Lorentzian AdS/CFT there exists a mapping between local bulk operators and nonlocal CFT operators. In global AdS this mapping can be found through use of bulk equations of motion and allows the nonlocal CFT operator to be expressed as a local operator smeared over a range of positions and times.

### High Energy Theory Seminar - Mikhail Vasiliev, Lebedev Institute, Moscow, Multiparticle higher-spin symmetry from operator algebra of free currents

Mon, Nov 18, 2013, 2:30 pm to 3:30 pm

### Biophysics Seminar Series - Thierry Emonet (Yale)

Mon, Nov 18, 2013, 12:00 pm to 1:00 pm

“Functional trade-offs and phenotypic diversity in cellular migration”

Lunch @11:45.

Lunch @11:45.

### High Energy Theory Seminar - Wei Song, Princeton University, "Thermodynamics of higher spin black holes"

Fri, Nov 15, 2013, 1:30 pm to 2:30 pm

### Hamilton Colloquium Series - Cristiano Galbiati, Princeton University: "What about dark matter?"

Thu, Nov 14, 2013, 4:30 pm to 5:30 pm

I will discuss the status of direct dark matter searches and the prospects for the DarkSide program.

### Informal HET Seminar - IAS - Timothy Cohen, Stanford University, “On Heavy Supersymmetry”

Thu, Nov 14, 2013, 1:30 pm to 2:30 pm

The discovery of a 125 GeV SM-like Higgs boson along with the absence of additional new physics signals have reinvigorated studies of "simple" supersymmetry breaking sectors. One such paradigm relies on anomaly plus gravity mediation; this model favors 3 TeV wino dark matter and gluinos in the O(10 TeV) range. Given these large masses, this...

### Math Physics Seminar, Nicolas Rougerie, "Structure of large bosonic systems: the mean-field approximation and the quantum de Finetti theorem"

Tue, Nov 12, 2013, 4:30 pm to 5:00 pm

I will discuss a general strategy to derive Hartree's theory for the ground state of a generic interacting many-bosons system with mean-field scaling. The validity of the mean-field approximation is interpreted as a consequence of the structure of the set of bosonic density matrices with large number of particles, in particular of the so-called...

### Special Seminar - Lisa Randall - Professor, Harvard University

Tue, Nov 12, 2013, 2:00 pm to Wed, Nov 6, 2013, 3:00 pm

### Special Seminar - Double Disk Dark Matter - Lisa Randall - Professor, Harvard University

Tue, Nov 12, 2013, 2:00 pm to 3:00 pm

### High Energy Theory Seminar - IAS - Abhijit Gadde, California Institute of Technology - “(0,2) Trialities”

Mon, Nov 11, 2013, 2:30 pm to 3:30 pm

Motivated by the connection between 4-manifolds and 2d N=(0,2) theories, we study the dynamics of a fairly large class of 2d N=(0,2) gauge theories. We see that physics of such theories is very rich, much as the physics of 4d N=1 theories. We discover a new type of duality that is very reminiscent of the 4d Seiberg duality.

### Biophysics Seminar Series - Jie Xiao (Johns Hopkins University)

Mon, Nov 11, 2013, 12:00 pm to 1:00 pm

“Gene regulation at the single molecule level”

Lunch @11:45.

Lunch @11:45.

### HET Seminar - IAS - Andrei Parnachev, Leiden University - “Comments on Holographic Finite Density Matter”

Fri, Nov 8, 2013, 1:30 pm to 2:30 pm

I will review the low energy excitations and other observables in the strongly interacting finite density states described by holography.

### Hamilton Colloquium Series - Sarah Eno, University of Maryland: "The LHC: Beyond the Standard Model"

Hamilton Colloquium Series - Sarah Eno, University of Maryland: "The LHC: Beyond the Standard Model"

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

The Higgs was postulated, during the 1970s, to be the source of electroweak symmetry breaking in the standard model. For my entire professional career, the search for the Higgs boson has been the highest priority goal for the field of experimental high energy physics.

### Condensed Matter Seminar, Hsin Lin, "Nontrivial spin texture of the coaxial Dirac cones on the surface of topological crystalline insulator SnTe"

Tue, Nov 5, 2013, 2:00 pm to 4:00 pm

The recently discovered topological crystalline insulators harbor Dirac surface states protected by a discrete set of crystalline space group symmetries and show immense promise for novel quantum applications.

### High Energy Theory Seminar - Xi Dong, Stanford - "Holographic Entanglement Entropy for General Higher Derivative Gravity"

Mon, Nov 4, 2013, 2:30 pm to 3:30 pm

We propose a general formula for calculating the entanglement entropy in theories dual to higher derivative gravity where the Lagrangian is a contraction of Riemann tensors. Our formula consists of Wald's formula for the black hole entropy, as well as corrections involving the extrinsic curvature.

### Condensed Matter Seminar, Leonid Levitov , "Atomic collapse in graphene"

Mon, Nov 4, 2013, 1:15 pm to 2:30 pm

Since the discovery that electrons in graphene behave as massless Dirac fermions, the single-atom-thick material has become a fertile playground for testing exotic predictions of quantum electrodynamics, such as Klein tunneling and the fractional quantum Hall effect.

### Biophysics Seminar Series - Stefano Fusi (Columbia University)

Mon, Nov 4, 2013, 12:00 pm to 1:00 pm

“The importance of mixed selectivity in complex cognitive tasks”

Lunch @11:45.

Lunch @11:45.