# Events Archive

## Events Archive

### Condensed Matter/High Energy Theory Seminar - Zhengcheng Gu, KITP - Duality between symmetry protected topological order & intrinsic topological order

Tue, Feb 21, 2012, 1:30 pm to 3:00 pm

Symmetry protected topological(SPT) phase is a generalization of topological insulator(TI). Different from the intrinsic topological phase, e.g., the fractional quantum hall(FQH) phase, SPT phase is only distinguishable from a trivial disordered phase when certain symmetry is preserved.

### High Energy Theory Seminar - Kurt Hinterbichler, University of Pennsylvania - "New developments in massive gravity"

Fri, Feb 17, 2012, 1:30 pm to 2:30 pm

The idea that the graviton may be massive has seen a resurgence of interest due to recent progress which has overcome its traditional problems.

### Gravity Group Astrophysics/Cosmology Lunch "Topics in gravity/cosmology, Part 2"

Fri, Feb 17, 2012, 12:00 pm to 1:30 pm

To kick off the semester, we will have a series of short (<= 20 min) talks from local postdocs from the Physics and Astronomy departments, the PCTS, and the IAS working on gravity/cosmology-related topics.

cut off time for ordering your hoagie 9:30am Friday ***NEW TIME***

cut off time for ordering your hoagie 9:30am Friday ***NEW TIME***

### Physics Colloquium-Michael Brenner, Harvard

Thu, Feb 16, 2012, 4:30 pm to 6:00 pm

### AMO Seminar - Iannis Kominis, local visitor from the University of Crete - A Bird's Eye View of Spin Coherence

Tue, Feb 14, 2012, 2:00 pm to 3:00 pm

Radical-ion pair reactions play a fundamental role in photosynthesis and are also understood
to underlie the avian magnetic compass mechanism. It was recently shown that these biochemical
reactions exhibit a host of quantum coherence phenomena, thus providing a promising and very exciting

### High Energy Theory Seminar - Alejandra Castro, McGill University - The gravity dual of the Ising model

Mon, Feb 13, 2012, 2:30 pm to 3:30 pm

Abstract: The AdS/CFT correspondence provides a non-perturbative formulation of quantum gravity, and in particular it provides a precise definition of a gravitational path integral. Applying the duality to solvable CFTs could give insight to the nature of holography and clarify other puzzles in quantum gravity.

### Condensed Matter Seminar, Leo Kadanoff, "Numerical Renormalization Methods"

Mon, Feb 13, 2012, 1:15 pm to 2:30 pm

### High Energy Theory Seminar - IAS - Nima Arkani-Hamed - TBA

### Gravity Group Astrophysics/Cosmology Lunch, Topics in gravity/cosmology

Fri, Feb 10, 2012, 12:00 pm to 1:30 pm

To kick off the semester, we will have a series of short (<= 20 min) talks from local postdocs from the Physics and Astronomy departments, the PCTS, and the IAS working on gravity/cosmology-related topics.

for ordering your hoagie -- cutoff: 9:30am Friday ***NEW TIME***

for ordering your hoagie -- cutoff: 9:30am Friday ***NEW TIME***

### Hamilton Lecture-Leo Kadanoff

Thu, Feb 9, 2012, 8:00 pm to 10:00 pm

"Making a Splash, Breaking a Neck: The Development of Complexity in Physical Systems

https://deptbedit.princeton.edu/physics/events/hamilton-lecture/

https://deptbedit.princeton.edu/physics/events/hamilton-lecture/

### AMO Seminar - Wes Campbell, University of Maryland - Quantum information science with cold ions and molecules

Thu, Feb 9, 2012, 1:30 pm to 3:00 pm

We use a collection of trapped atomic ions as a platform for the analog quantum simulation of lattice spin models. By applying spin-dependent optical dipole forces to an ion crystal, a long-range effective spin-spin interaction arises that allows the simulation of spin Hamiltonians that possess nontrivial order in their ground state.

### Math Phys Seminar: Jonathan Breuer (Hebrew University) 'Nonintersecting random walkers with a staircase initial condition'

Tue, Feb 7, 2012, 4:30 pm to 6:00 pm

We study a model of one dimensional particles, performing geometrically weighted random walks that are conditioned not to intersect. The walkers start at equidistant points and end at consecutive integers. A naturally associated tiling model can be viewed as one of placing boxes on a staircase.

### Informal High Energy Theory Seminar - IAS - Bogdan Stefanski, City University London

Tue, Feb 7, 2012, 1:30 pm to 2:30 pm

TBA

### High Energy Theory Seminar - IAS - Razvan Gurau, Perimeter Institute - The Large N Limit of Tensor Models

Mon, Feb 6, 2012, 3:00 pm to 4:30 pm

Matrix models yield a theory of random two dimensional
surfaces. They support a 1/N expansion dominated by planar graphs
(corresponding to planar surfaces) and undergo a phase transition to a
continuum theory. In higher dimensions matrix models generalize to
tensor models. In the absence of a viable 1/N expansion tensor models

### Condensed Matter Seminar, Leo Kadanoff, "Are Renormalization Methods "Really Ugly"?"

Mon, Feb 6, 2012, 1:15 pm to 2:30 pm

### High Energy Theory Seminar - Jonathan Heckman - IAS - Connecting Strings to Things

Tue, Jan 31, 2012, 1:30 pm to 3:00 pm

In this talk I describe some of the recent progress made in embedding the Standard Model of particle physics in a theory of open strings.

### High Energy Theory Seminar - Simone Giombi - Perimeter Institute - Higher spin theories and holography

Tue, Jan 24, 2012, 1:30 pm to 3:00 pm

Abstract: I will overview recent progress in testing the holographic duality between
3d vector models and higher spin gravity theories in four-dimensional Anti-de Sitter space.
I will also discuss some new results on the CFT obtained by coupling 3d vector models to
a Chern-Simons gauge field. In particular, I will show that such theory has a...

### AMO Seminar - Monika Schleier-Smith - A Squeezed Atomic Clock Enabled by Cavity Feedback - Quantum Many-Body Systems Division LMU Munich

Mon, Jan 23, 2012, 2:00 pm to 3:30 pm

Over a decade ago, the stability of atomic clocks reached the standard quantum limit, set by the projection noise inherent in measurements on an ensemble of uncorrelated particles.

### AMO Seminar - Building Synthetic Materials from Ultracold Atoms: Quantum Magnetism in an Optical Lattice - Jonathan Simon - Harvard/MIT

Thu, Jan 19, 2012, 1:30 pm to 3:00 pm

Ultracold atoms in optical lattices form a unique testbed for quantum many-body physics. Using such systems it has recently become possible to engineer strongly-correlated materials from the ground up and probe them with single-atom resolution.

### CMP Seminar - Tianheng Han - MIT - The Search For Quantum Spin Liquids

Thu, Jan 12, 2012, 3:15 pm to 4:15 pm

The experimental realization of a quantum spin liquid ground state in two-dimensions-a new form of matter with no conventional broken symmetry-has been under intensive investigations for decades. Recently, this novel state has likely been discovered.