Archive of IAS Monday High Energy Theory Seminars

Oct
21
2013

High Energy Theory Seminar

Axion Detection with NMR
Peter Graham
2:30pm|Bloomberg Lecture Hall

The axion is a well-motivated dark matter candidate, but is challenging to search for. We propose a new way to search for QCD axion and axion-like-particle (ALP) dark matter. Nuclei that are interacting with the background axion dark matter acquire...

Oct
07
2013

High Energy Theory Seminar

Space-Time S-matrix and Flux-Tube S-matrix
Pedro Vieira
2:30pm|Bloomberg Lecture Hall

In planar N=4 Super-Yang-Mills theory there is a map between gluons scattering amplitudes and null polygonal Wilson loops. This remarkable duality allows one to make an important step forward by Operator-Product-Expanding the scattering amplitudes...

Sep
23
2013

High Energy Theory Seminar

Topological Order and Long-range Entanglement -- Can Elementary Particles Emerge from Qubits?
Xiao-Gang Wen
2:30pm|Bloomberg Lecture Hall
Long-range entangled qubits (or quantum spins) from new states of matter whose low energy effective theory realize topological quantum field theories. Those topologically ordered states of purely bosonic qubits can produce emergent gauge theory and...
May
13
2013

High Energy Theory Seminar

Classical Conformal Block and Painleve VI
Alexander B. Zamolodchikov
2:30pm|Bloomberg Lecture Hall
Classical conformal blocks appear in the limit c->infinity of the Virasoro conformal blocks. Classical conformal blocks have close relationship to monodromy of the second order differential equations with regular singularities. I will discuss...
Apr
22
2013

High Energy Theory Seminar

ACME: Obtaining an Electron Electric Dipole Moment from ThO
Gerald Gabrielse
2:30pm|Bloomberg Lecture Hall
The electron edm is an important constraint on extensions to the Standard Model such as supersymmetric models. ACME is closing in on a more sensitive measurement of this moment, profiting from the huge electric field within the ThO molecule.
Apr
08
2013

High Energy Theory Seminar

(Why) Is Helicity Lorentz-Invariant?
Philip Schuster
2:30pm|Bloomberg Lecture Hall
Massless particle states carry integer or half-integer spin about themomentum axis, or "helicity". Lorentz symmetry allows for helicity states to mix under boosts (like massive particle polarizations); such mixing is not understood theoretically and...
Mar
11
2013

High Energy Theory Seminar

Closed Strings and Non-Commutative/Non-Associative Geometry
Dieter Luest
2:30pm|Bloomberg Lecture Hall
In this talk I discuss that non-commutative and non-associative geometry emerges for closed strings moving in non-geometric backgrounds. The origin of closed string non-commutativity (non-associativity) is due to new closed string boundary...
Feb
04
2013

High Energy Theory Seminar

Yangians and Supersymmetric Gauge Theory
Kevin Costello
2:30pm|Bloomberg Lecture Hall
I'll describe a new link between supersymmetric gauge theories, with gauge group G, and the Yangian for the Lie algebra of G. The main result is that a certain twisted, deformed N=1 supersymmetric gauge theory, with gauge group G, is "controlled" by...
Dec
17
2012

High Energy Theory Seminar

Horizon Thermodynamics and Entanglement Entropy
Ted Jacobson
2:30pm|Bloomberg Lecture Hall
I will discuss an old argument suggesting that thermodynamics of vacuum fluctuations implies that spacetime causal structure is dynamical and governed by Einstein's equation. Various probes of the consistency of this reasoning and implications for...
Physics