1. Maykel L. González-Martínez Challenges @ ultracold temperatures maykel.gonzalez-martinez@u-psud.fr October 3 th, 2013. Bordeaux

2. Why?

3. October 3 th, 2013. Bordeaux... it's not about the money

4. October 3 th, 2013. Bordeaux (the) science is cool!

5. G Quéméner and PS Julienne Chem. Rev. 112, 4949 (2012) October 3 th, 2013. Bordeaux... fairly cold

6. http://cua.mit.edu/ketterle_group/experimental_setup/BEC_I/background.html control...? October 3 th, 2013. Bordeaux

7. T Kraemer Nature 440, 315 (2006)

8. October 3 th, 2013. Bordeaux I Bloch Nature Phys. 1, 23 (2005)

9. October 3 th, 2013. Bordeaux M Baranov et al. Chem. Rev. 112, 5012 (2012)

10. October 3 th, 2013. Bordeaux G Quéméner and PS Julienne Chem. Rev. 112, 4949 (2012)

11. October 3 th, 2013. Bordeaux KP Schmidt et al. Phys. Rev. Lett. 101, 150405 (2008) Novel condensed phases

12. October 3 th, 2013. Bordeaux is it... RECOGNITION?

13. October 3 th, 2013. Bordeaux ultracold in title: ISI Web of Knowledge (30/09/2013) publications citations

14. October 3 th, 2013. Bordeaux ultracold in title, PRL: ISI Web of Knowledge (30/09/2013) publications (PRL) citations (PRL)

15. October 3 th, 2013. Bordeaux Steven ChuClaude Cohen- Tannouidji William D. Phillips Serge HarocheDavid Wineland Eric A. CornellWolfgang KetterleCarl E. Wieman 1997 2001 2012 Photos: U Montan Photos: The Nobel Foundation “... methods that enable measuring and manipulation of individual quantum systems...” “... achievement of Bose-Einsten condensation... fundamental studies of the properties of the condensates.” “... methods to cool and trap atoms with laser light.”

16. October 3 th, 2013. Bordeaux 1997 2001 2012

17. October 3 th, 2013. Bordeaux Indirectly* * from ultracold atoms

18. October 3 th, 2013. Bordeaux The `ultracold' Periodic Table

19. October 3 th, 2013. Bordeaux Fig. from J Herbig et al. Science 301, 1510 (2003) M agneto-association

20. October 3 th, 2013. Bordeaux T Takekoshi et al. Phys. Rev. A. 85, 032506 (2012)

21. October 3 th, 2013. Bordeaux Fig.from J Ulmanis et al. Chem. Rev. 112, 4890 (2012) P hoto-association

22. October 3 th, 2013. Bordeaux Directly* * from `warm' species

23. October 3 th, 2013. Bordeaux LD Carr et al. New J. Phys. 11, 055049 (2009)

24. Collisions Evaporative cooling Buffer-gas cooling Sympathetic cooling THERMALIZATION Lifetimes in traps Trap losses TRAP DYNAMICS Reproduce · Understand · Predict October 3 th, 2013. Bordeaux

27. `Traditional' coupled-channel methodology Problem N coupled (differential) equations Observables! ST (S/T matrix) effort (time) ∝ N 3 interpretation October 3 th, 2013. Bordeaux

28. effort/calc. Low anisotropyLarge anisotropy Rotation N ≈ 1–10 t ∝ (m)seconds N ≈ 10 2 –10 4 t ∝ mins, hours... Fine (electronic spin) N' ≈ N ✕ 2–10 t' ≈ t ✕ 10–10 3 Hyperfine (nuclear spin) N' ✕ 2–10 2 t' ✕ 10–10 6 1 Basis size Frustration October 3 th, 2013. Bordeaux

29. Field strength Collision energy Collisions take place in traps...... at a given 'temperature'. Potential 'survey' Well... and potentials are not 100% accurate + field strength '2' + angle f 1 /f 2... Hmm... if we really need to make it 'real'... 2 Parameters October 3 th, 2013. Bordeaux

30. Jan 31, 2013. MMQA'13, London

31. ... there are alternatives, aren't there?! October 3 th, 2013. Bordeaux

32. Uff... do we really have to? I know... but how far can we go if...?... sure there aren't other ways? NO (if it's difficult!): Bohn's (et al.) statistical approach Phys. Rev. A 85, 062712 (2012) Phys. Rev. A 87, 012709 (2013) total-J approximation: Tsherbul's (et al.) J. Chem. Phys. 133, 184104 (2010) Phys. Rev. A 84, 040701 (2011) J. Chem. Phys. 137, 024103 (2012) Phys. Rev. A 85, 052710 (2012) Multichannel Quantum Defect Theory: Croft's (et al.) Phys. Rev. A 84, 042703 (2011) Phys. Rev. A 86, 022711 (2012) Phys. Rev. A 87, 032710 (2013) McBane (optimisations, approximations) MLGM (approximate hyperfine, single column) 1 2 1 1 To 'CC' or not to 'CC'... '1' October 3 th, 2013. Bordeaux

34. M Mayle et al. Phys. Rev. A 85, 062712 (2012)

35. October 3 th, 2013. Bordeaux M Mayle et al. Phys. Rev. A 85, 062712 (2012)

36. October 3 th, 2013. Bordeaux quantum Scattering at Ultracold temPERatures: a few S-matrix COLumns is all we neeD

37. October 3 th, 2013. Bordeaux

38. pioneering multi-disciplinary evolving

39. Many Thanks!