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November 2009
Events Calendar
| Sun | Mon | Tue | Wed | Thu | Fri | Sat |
|---|---|---|---|---|---|---|
| 01 (Week 44) |
02 |
03 |
04 |
05 3:30pm»Colloquium |
06 |
07 |
| 08 (Week 45) |
09 |
10 |
11 |
123:30pm» Colloquium |
13 |
14 |
| 15 (Week 46) |
16 |
17 |
18 |
193:30pm» Colloquium |
20 |
21 |
| 22 (Week 47) |
23 |
24 |
25 |
26Thanksgiving
|
27 |
28 |
| 29 (Week 48) |
30 |
- Time:
- 3:30pm - 4:30pm
- Description:
- Roberto Ramos (Drexel University)
From Classical Resonators to Novel Artificial Atoms
Abstract:
When two superconductors are interrupted by a weak link, the behavior of the resulting physical system can be described as a tunable classical resonator which can be excited by microwaves. When sufficiently cooled and isolated from the environment, this classical resonator behaves like an artificial atom with distinct quantum energy states. In this talk, I will discuss the results of our transport and microwave experiments carried out at temperatures between 4K and 0.010 K showing classical and quantum behavior in these systems. I will discuss results involving conventional Nb junctions, new data involving microwave resonant activation in magnesium diboride (MgB2) junctions and work involving graphene-based junctions.
- Time:
- 3:30pm - 4:30pm
- Description:
- Zein-Eddine Meziani (Temple University)
Host: Chuck Lane
Spin Structure of the Nucleon and QCD.
Abstract:
In the last 20 years the investigation of the spin structure of the nucleon spawned a very productive experimental and theoretical activity with exciting results and new challenges. This investigation has included a variety of aspects, such as testing Quantum Chromo Dynamics (QCD), the theory of strong interactions in its perturbative regime via spin sum rules (like the Bjorken sum rule) and understanding how the spin of the nucleon is build from the intrinsic degrees of freedom of the theory, namely quarks and gluons. Results from a new generation of experiments performed at Jefferson Lab seeking to address key issues in the nucleon spin structure and QCD will be presented. The extension of this spin physics program using the 12 GeV upgrade of Jefferson Lab will be also discussed.
See
http://indico.cern.ch/materialDisplay.py?contribId=7&sessionId=2&materialId=slides&confId=9499
- Time:
- 3:30pm - 4:30pm
- Description:
- Michael Vogeley (Drexel University)
Cosmic Voids and Void Galaxies
Abstract:
Wide-angle, moderately deep redshift surveys such as that conducted as part of the Sloan Digital Sky Survey (SDSS) allow study of the relationship between the structural elements of the large-scale distribution of galaxies - including groups, cluster, superclusters, and voids - and the dependence of galaxy formation and evolution on these environments. In this talk I will focus on the identification of voids as dynamically distinct large-scale structures and examine their properties. Then I will discuss the properties of galaxies in voids, from normal galaxies to merging galaxies and active galactic nuclei.
- Description:
- Thanksgiving
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