Events Archive


SPECIAL Condensed Matter Seminar - Ben Feldman, Harvard University - "Spin and Valley Influence on the Fractional Quantum Hall Effect in Suspended Gra

Fri, Dec 21, 2012, 1:30 pm to 2:30 pm
Graphene has recently attracted considerable interest because the fourfold spin and valley degeneracy of its charge carriers enables the formation of a rich variety of correlated states at high magnetic field. In this talk, I will discuss electronic compressibility measurements of suspended graphene in the quantum Hall regime.

SPECIAL Condensed Matter Seminar - Inna Vishik, Stanford University - "Phase Competition in Cuprate Superconducting Dome"

Wed, Dec 19, 2012, 1:30 pm to 2:30 pm
The cuprate high temperature superconductors constitute one of the most difficult problems in condensed matter physics and a detailed experimental phenomenology is a crucial starting point for microscopic understanding.

Astroparticle Seminar: Masayuki Wada, U of Texas-Austin "Searching for chiral symmetry restoration in relativistic heavy-ion collision w/ vector meson

Mon, Dec 17, 2012, 3:00 pm to 4:00 pm
"Searching for chiral symmetry restoration in relativistic heavy-ion collision with vector mesons" Abstract:

High Energy Theory Seminar - IAS - Ted Jacobson, University of Maryland - “Horizon Thermodynamics and Entanglement Entropy”

Mon, Dec 17, 2012, 2:30 pm to 3:30 pm
I will discuss an old argument suggesting that thermodynamics of vacuum fluctuations implies that spacetime causal structure is dynamical and governedby Einstein's equation. Various probes of the consistency of this reasoning and implications for the nature of horizon entropy will be considered.

High Energy Theory Seminar - IAS - David Simmons-Duffin, IAS - “Projectors, Shadows, and Conformal Blocks”

New prospects for cold molecular physics - Kang-Kuen Ni - JILA

Thu, Dec 13, 2012, 1:30 pm to 2:30 pm
The role of molecular spectroscopy in the broader interests of physics has evolved over the years. It was traditionally the study of molecular structure and its underlying quantum mechanics.

High Energy Theory Seminar - Daniel Jafferis, Harvard University - "Exact results in 5d superconformal theories with gravity duals"

Wed, Dec 12, 2012, 2:30 pm to 4:00 pm
I will explain how the S^5 partition function of 5d superconformal field theories with gravity duals may be computed in the large N limit. This involves applying the techniques of localization to non-renormalizable 5d Yang-Mills theories obtained by deformation of these SCFTs by a relevant operator.

Math Phys Seminar: Jean-Pierre Eckman (University of Geneva) 'Atoms, Nuclei, and 3d Triangulations'

Tue, Dec 11, 2012, 3:30 pm to 5:00 pm
Based on the work of Durhuus-Jonsson and Benedetti-Ziegler, we revisit the question of the number of triangulations of the 3-ball. We introduce a notion of nucleus (a triangulation of the 3-ball without internal nodes, and with each internal face having at most 1 external edge). We show that every triangulation can be built from trees of nuclei.

High Energy Theory Informal Seminar - IAS- Joe Polchinski, KITP, University of CA, Santa Barbara-“Scale and Conformal Invariance in Quantum Field"

High Energy Theory Seminar - IAS - Joe Polchinski, KITP, University of California, Santa Barbara - “Black Holes: Complementarity or Firewalls?”

Mon, Dec 10, 2012, 2:30 pm to 3:30 pm
I argue that the following three widely believed statements cannot all be true: (i) Hawking radiation is in a pure state, (ii) the information carried by the radiation is emitted from the region near the horizon, with low energy effective field theory valid beyond some microscopic distance from the horizon, and (iii) the infalling observer...

Condensed Matter Physics with Ultracold Atoms: from Mott Insulators to Topological Superfluids - Waseem Bakr - MIT

Mon, Dec 10, 2012, 2:30 pm to 3:30 pm
Abstract: Recent advances in probing and controlling ultracold atomic gases have allowed access to rich physics from the realm of condensed matter. In the first part of this talk, I will describe quantum gas microscopy, a new tool for imaging and manipulating strongly interacting quantum gases containing thousands of atoms at the single atom level.

Condensed Matter Seminar - Ganpathy Murthy, University of KY - Hamiltonian Theory of Fractionally Filled Chern Bands

Mon, Dec 10, 2012, 1:15 pm to 2:30 pm
Abstract: When a band of noninteracting electrons has a nontrivial Chern number, it is called a Chern band. When such a band is fully filled, the dimensionless Hall conductance is the Chern number.

Biophysics Seminar Series - Sergey Kryazhimskiy, Harvard

Mon, Dec 10, 2012, 11:45 am to 1:00 pm
“Epistasis and adaptation in yeast”

High Energy Theory Seminar - Liam Fitzpatrick, Stanford University - "AdS Field Theory and Conformal Field Theory"

Fri, Dec 7, 2012, 1:30 pm to 2:30 pm
We discuss how locality in AdS duals to Conformal Field Theories emerge vis-a-vis bulk Effective Field Theory descriptions with a high-scale cut-off, and the emergence of a weakly-coupled Eikonal limit for high-spin CFT operators. First, we provide necessary and sufficient conditions for a CFT to have a description in terms of a local EFT in AdS.

Physics Colloquium: Eleni Katifori, Max-Planck Institute for Dynamics & Self-Organization - "The Geometry and Topology of Plant Structures"

Thu, Dec 6, 2012, 4:30 pm to 5:30 pm
The plant kingdom is rich with examples of tissues, organs and entire organisms that uniquely showcase elegant mathematical and physical principles. These principles frequently reflect the interplay between functional necessity and developmental constraints.

Lessons from a high-Tc superfluid: probing local quantities in a strongly interacting Fermi gas - Yoav Sagi JILA

Tue, Dec 4, 2012, 2:00 pm to 3:30 pm
The collective behavior of an ensemble of strongly interacting fermions is central to many physical systems including liquid 3He, high-Tc superconductors, quark-gluon plasma, neutron stars, and ultracold Fermi gases.

Informal High Energy Theory Seminar - IAS - Raphael Bousso, Lawrence Berkeley National Laboratory - “Is There An Alternative To Firewalls?”

High Energy Theory Seminar - IAS - Scott Thomas, Rutgers, The State University of New Jersey - TBA

High Energy Theory Seminar - IAS - Christoph Keller, Rutgers, The State University of NJ - “Modular Constraints on Calabi-Yau Compactifications”

Physics Colloquium - Elizabeth Olson, Columbia University - "Amplification of Sound in the Mammalian Cochlea"

Thu, Nov 29, 2012, 4:30 pm to 5:30 pm
The snail-shaped mammalian cochlea houses a narrow strip of sensory tissue that separates compartments of salty water. Sound stimulation launches a mechanical traveling wave down the cochlea that peaks in a tonotopic manner: high/low frequencies peak in the cochlear base/apex. Sensory hair cells respond to the motion with intracellular current and...