Events Archive

2016

Gravity Group Seminar, Sean McWilliams (W. Virginia University)

Gravity Group Seminar, Sean McWilliams (W. Virginia University) "The Birth of Observational Gravitational-Wave Astrophysics, and Its Future"

Fri, Mar 4, 2016, 12:00 pm to 1:00 pm

On September 14, 2015, the unique gravitational-wave signature of a binary black-hole binary merger was detected by the Advanced LIGO observatories. This marks the beginning of a completely new era of modern physics, the dawn of observational gravitational-wave astrophysics.

Hamilton Colloquium Series - Kerstin Perez, Haverford: “In Search of Cosmic-Ray Antinuclei from Dark Matter”

Thu, Mar 3, 2016, 4:30 pm to 6:00 pm

Cosmic-ray antiprotons have been a valuable tool for dark matter searches since the 1970s. Recent years have seen increased theoretical and experimental effort towards the first-ever detection of cosmic-ray antideuterons, in particular as an indirect signature of dark matter annihilation or decay in the Galactic halo.

Physics Group Meeting IAS - Discussion Group led by David Simmons-Duffin, Member IAS - “Looking for a Bulk Point”

Wed, Mar 2, 2016, 1:30 pm to 2:30 pm
This discussion will focus on the question of how locality on distance scales smaller than the AdS radius can emerge from a CFT. We will introduce Landau singularities as a sign of locality in QFT, and discuss the extent to which they are present holographically. Reading list:

Math Physics Seminar, Michael Brenner, Harvard, "A Potential mechanism for a singular solution of the Euler Equation"

Tue, Mar 1, 2016, 4:30 pm to 5:30 pm
I will describe a potential mechanism for a singular solution of the Euler equation. The mechanism involves the interaction of vortex filaments, but occurs sufficiently quickly and at a small enough scales that could have plausibly evaded experimental and computational detection. Joint work with Sahand Hormoz and Alain Pumir.

Pheno & Vino Seminar, Yuhsin Tsai, U. of Maryland, Exotic Signals in The Twin Higgs Model

Tue, Mar 1, 2016, 4:00 pm to 5:30 pm
Twin Higgs (TH) model gives a naturalness motivation to study the non-SM colored BSM particles, which usually have decay processes relating to the dark-hadronization and displaced signal. In this talk, I will use two examples to discuss these two distinct phenomenology in both collider and astrophysical experiments.

High Energy Theory Seminar IAS - Jared Kaplan, Johns Hopkins University, “On Information Loss in AdS_3/CFT_2”

Biophysics Seminar - Michelle Wang, Cornell "Single molecule mechanics – towards high throughput"

Mon, Feb 29, 2016, 12:00 pm to 1:00 pm
Our lab focuses on mechanical studies of fundamental biological processes in biology: transcription and replication. These are highly dynamic processes that are carried out by molecular motors that translocate along, and rotate around, DNA.

High Energy Theory Seminar - Mykola Dedushenko, Princeton University - "Chiral algebras in 2d N=(0,2) theories"

Fri, Feb 26, 2016, 1:45 pm to 3:00 pm
A supersymmetric sector of N=(0,2) theories in two dimensions defined by taking the cohomology of one of the supercharges is known to carry the structure of a chiral algebra. I will talk about some general and more concrete properties of such algebras. Based on supersymmetry only, it is possible to argue that this algebra is an RG-invariant.

Gravity Group Seminar, Liang Dai (IAS, JHU) "Gravitationally lensed gravitational waves"

Fri, Feb 26, 2016, 12:00 pm to 1:00 pm

Current and forthcoming ground and space-based gravitational-wave observatories will detect gravitational wave events from binary mergers up to cosmological distances.

PCTS Annual Lecture 2016: Michael Brenner, Harvard, "The Science of Cooking"

Thu, Feb 25, 2016, 8:00 pm to 9:30 pm

Bubbles, droplets, fluid flows, phase transitions, molecular viscosity and elasticity. Welcome to the world of science and cooking! Every cook—whether a top chef or just a humble cook at home—uses these physical principles. This lecture uses food and cooking to explicate fundamental principles in applied physics and engineering.

Audience: A free lecture open to the public.

Hamilton Colloquium Series - Joseph Curtin, Joseph Curtin Studios: “Can Stradivari’s Sound Be Measured?”

Thu, Feb 25, 2016, 4:30 pm to 6:00 pm

A longstanding goal of violin research has been to establish objectively measurable parameters for violin quality. These would presumably substantiate one of the violin-world’s most passionately held beliefs: Violins made by Stradivari and his contemporaries in 18th Century Italy sound better than any made elsewhere or since.

Special CMS, Michael Brenner, Harvard, "Towards artificial living materials"

Wed, Feb 24, 2016, 2:30 pm to 4:00 pm
Biological systems provide an inspiration for creating a new paradigm for materials synthesis. Imagine it were possible to create an inanimate material that could both perform some function, e.g. catalyze a set of reactions, and also self replicate.

Physics Group Meeting IAS - Discussion Group led by Mauricio Romo, IAS - “Gauged Linear Sigma Models, B-branes and Hemispheres”

Wed, Feb 24, 2016, 1:30 pm to 2:30 pm
I'll start reviewing some aspects of my paper with K. Hori [1] about localization of Gauged Linear Sigma Models (GLSM) on a disc/hemisphere. The focus is on a special class of boundary conditions corresponding to B-branes. I'll then review the relevant concept of grade restriction rule [2] which is fundamental for transport of B-branes around the...

Math Physics Seminar, Lukas W. Schimmer, Princeton, "Asymptotics of the eigenvalues of operators for mirror curves"

Tue, Feb 23, 2016, 4:30 pm to 5:30 pm
Using the coherent state transform I willI establish the asymptotical behaviour of the Riesz mean for functional-difference operators associated to mirror curves of special del Pezzo Calabi–Yau threefolds. Furthermore, I will prove the Weyl law for the eigenvalue counting function of these operators, therefore implying that their inverses are...

Pheno & Vino Seminar, Jakub Scholtz, Harvard, "Flooded Dark Matter and core/cusp resolution with fermionic dark matter"

Tue, Feb 23, 2016, 4:00 pm to 5:30 pm
Most dark matter (DM) models set the DM relic density by some interaction with Standard Model particles. Such models generally assume the existence of Standard Model particles early on, with the DM relic density a later consequence of those interactions.

High Energy Theory - Wilke van der Schee, MIT - "Evolution of the jet opening angle distribution in holographic plasma"

Mon, Feb 22, 2016, 2:30 pm to 3:30 pm
Jets are particularly interesting probes to study the formation and evolution of quark-gluon plasma, as created in heavy ion collisions. In this talk I will briefly review attempts to describe the jet evolution in holography, and will argue that essential progress can be made by studying also the substructure of the jet, in particular the...

Condensed Matter Seminar, Steve Kivelson, Stanford, "Electron Nematic Phases in Highly Correlated Electron Systems"

Mon, Feb 22, 2016, 1:15 pm to 2:30 pm
Phases of the strongly interacting electron fluid which spontaneously break the point-group symmetries of the host crystal can sometimes be characterized as “electron nematic phases.” Such phases increasingly appear to play a significant role in the physics of a variety of “interesting” materials, including the Cu and Fe based high temperature...

Biophysics Seminar - Jason Swedlow, University of Dundee "Signalling and mechanics in the human mitotic spindle and the DNA damage response."

Mon, Feb 22, 2016, 12:00 pm to 1:00 pm
A hallmark of mitosis in mammalian cells is the alignment of chromosomes into a thin metaphase plate.

High Energy Theory Seminar IAS - Carlos Mafra, IAS - "Multiloop Scattering Amplitudes in String and Field Theory"

Fri, Feb 19, 2016, 1:45 pm to 3:00 pm
I will review recent progress in the computation of multiloopscattering amplitudes using the pure spinor formalism of the superstring and make comments about future directions.

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