1. QCD viscosity and BEC-BCS crossover in effective field theory Jiunn-Wei Chen ( 陳俊瑋 ) National Taiwan U.

2. Effect Field Theory Make use of scale separation to integrate out the high energy scales Low energy physics reproduced

3. Light-by-light Scattering

4. QCD viscosity w/ Eiji Nakano, Yan-Han Lee, Yang-Fu Liu BEC-BCS Crossover w/ Eiji Nakano

5. QCD Viscosity Shear viscosity Frictional force

6. Shear viscosity measures how “perfect” a fluid is!

7. Kovtun, Son, and Starinets (’05) Conjecture: Shear viscosity / entropy density Motivated by AdS/CFT

8. QGP (quark gluon plasma) almost saturates the bound @ just above Tc --- a perfect fluid What happens below Tc?

9. Pion gas ChPT (chiral perturbation theory) Non-perturbative in coupling Boltzman equation

10. JWC, Nakano

13. QCD Phase Diagram

14. The Landscape JWC, Lee, Liu, Nakano

15. The Landscape

16. Cold Trapped Atoms Source: C. Regal

17. Review: Scattering Length Source: C. Regal

18. BEC-BCS Crossover Source: C. Regal Changing a at will: Technique of Feshbach Resonance

19. Epsilon Expansion (Nishida and Son) Computing in dim. Expanding in Setting

20. Why is 4d special? has a singularity at for ground state a free Bose gas

21. Effective Potential Diagrams

22. BEC-BCS Crossover in NLO Epsilon Expansion JWC+ E. Nakano (cond-mat/0610011)

24. Outlook viscosity/entropy: finite chemical potential, BEC-BCS crossover BEC-BCS crossover in epsilon exp.: NNLO