Archive of IAS Monday High Energy Theory Seminars

Apr
11
2016

High Energy Theory Seminar

Charge-vortex duality and Dirac Fermions in (2+1)d
Chong Wang
2:30pm|Bloomberg Lecture Hall
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...
Mar
28
2016

High Energy Theory Seminar

Linearity of Holographic Entanglement Entropy
Ahmed Almheiri
2:30pm|Bloomberg Lecture Hall
We consider the question of whether the leading contribution to the entanglement entropy in holographic CFTs is truly given by the expectation value of a linear operator as is suggested by the Ryu-Takayanagi formula. We investigate this property by...
Mar
14
2016

High Energy Theory Seminar

Complexity Behind the Horizon
Leonard Susskind
2:30pm|Bloomberg Lecture Hall

Quantum mechanics is distinguished by three essential features: the Hugeness of Hilbert Space, I.e., the capacity for exponential complexity; the phenomenon of Entanglement; and the duality between Wave Function Collapse and Everett's Relative...

Feb
01
2016

High Energy Theory Seminar

Landau Singularities and Symbology
Marcus Spradlin
2:30pm|Bloomberg Lecture Hall
In previous work it has been observed that the singularity structure of multi-loop scattering amplitudes in planar N=4 super-Yang-Mills theory is evidently dictated by cluster algebras. In my talk I will discuss the interplay between this...
Dec
14
2015

High Energy Theory Seminar

Chaos in Quantum Channels
Daniel Roberts
2:30pm|Bloomberg Lecture Hall

Motivated by black hole physics and holography, we study chaos, scrambling, and complexity by considering the entanglement properties of unitary operators. First, we develop a diagnostic of chaos by directly considering the time evolution of a...

Nov
30
2015

High Energy Theory Seminar

Signs of Hope: A Few LHC Run I Results to Watch for Run II
Maurizio Pierini
2:30pm|Bloomberg Lecture Hall

During the first LHC long shutdown, the CMS collaboration finalised the study of the 8TeV data collected in 2012. Within the impressive amount of results produced, a few searches for new physics show a tension with the prediction from the Standard...

Nov
16
2015

High Energy Theory Seminar

New Area Law in General Relativity (and beyond)
Netta Engelhardt
2:30pm|Bloomberg Lecture Hall

I will present a new area law in General Relativity. This new area law holds on local analogues of event horizons that have an independent thermodynamic significance due to the Bousso bound. I will also discuss a quantum generalization of this more...

Nov
02
2015

High Energy Theory Seminar

Gravity Dual of Relative Entropy
Nima Lashkari
2:30pm|Bloomberg Lecture Hall

Relative entropy is a measure of distinguishability of states and plays a central in quantum information theory. We argue that it is a natural generalization of free energy to far from equilibrium states. A generalization of the standard replica...

Oct
19
2015

High Energy Theory Seminar

A Cosmological Solution to the Hierarchy Problem
David Kaplan
2:30pm|Bloomberg Lecture Hall

I present a solution to the electroweak hierarchy problem which involves the relaxation of the Higgs mass in the early universe. I will briefly discuss the limits of validity of the model as well as potential experimental signatures.

Physics