Difference between revisions of "Quantum gases"

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This chapter is in preparation.
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<categorytree mode=pages style="float:right; clear:right; margin-left:1ex; border:1px solid gray; padding:0.7ex; background-color:white;" hideprefix=auto>8.422</categorytree>
  
== Handouts ==
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In this chapter, we discuss the three paradigmatic accomplishment of the field of cold atoms:  Bose-Einstein condensation, the superfluid to Mott insulator transition, and superfluid Fermi gases.,  These are three current frontiers of research, all made possible by the combination of laser cooling and evaporative cooling.  In the first section of this chapter, we present evaporative cooling and magnetic trapping, the two key techniques to achieve the nanokelvin temperature range (although more recently, evaporative cooling in optical traps has been used).
  
* Techniques for ultralow temperatures
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We hope that in the near future, we can add another section to this chapter, the study of magnetism in spin systems, realized with ultracold bosons and fermions.  This goal is currently pursued in several labs.
** Sub-Doppler and Sub-Recoil cooling
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*[[Quantum Scattering Theory]]
** Magnetic trapping
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*** Further reading: [http://cua.mit.edu/8.422/HANDOUTS/Varenna_99.pdf W. K., D.S. Durfee, D.M. Stamper-Kurn, Varenna Lecture Notes 1999, pp. 80-89]
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* [[Ultracold Bosons]]
** Evaporative cooling
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** [[Ideal Bose Gas]]
*** Further reading:: [http://cua.mit.edu/8.422/HANDOUTS/EvaporativeCoolingofTrappedAtoms.pdf W. Ketterle and N.J. van Druten, Adv. At. Mol. Opt. Phys. 37, 181-236 (1986).  Relevant pages: pp. 181-193]
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** [[Weakly Interacting Homogeneous Bose Gas]]
***     Slides on magnetic trapping and evaporative cooling
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** [[Inhomogeneous Bose Gas]]
* [http://cua.mit.edu/8.422/HANDOUTS/AMO%20class%20II.pdf Bose-Einstein condensation]
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** [[Superfluid Hydrodynamics]]
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** [[Superfluid to Mott Insulator Transition]]
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*** Superfluid to Mott insulator transition: Original paper on analytic decoupling solution [[File:PRA_Stoof_MI_e053601.pdf]]
 
** Further reading:  Bose-Einstein Condensation in Dilute Gases, C.J. Pethick and H. Smith, selected pages
 
** Further reading:  Bose-Einstein Condensation in Dilute Gases, C.J. Pethick and H. Smith, selected pages
**           On Bogoliubov transformation and collective excitation:  [http://cua.mit.edu/8.422/HANDOUTS/BECinDiluteGases205-214.pdf pp. 205-214]
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*** On Bogoliubov transformation and collective excitation:  [http://cua.mit.edu/8.422/HANDOUTS/BECinDiluteGases205-214.pdf handout pp. 205-214] (link broken)
**           On nonlinear Schrödinger equation:  [http://cua.mit.edu/8.422/HANDOUTS/BECinDiluteGases146-157.pdf pp. 146-156]
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*** On nonlinear Schrödinger equation:  [http://cua.mit.edu/8.422/HANDOUTS/BECinDiluteGases146-157.pdf handout pp. 146-156] (link broken)
**           On hydrodynamics:  [http://cua.mit.edu/8.422/HANDOUTS/BECinDiluteGases165-179.pdf pp. 165-179]
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*** On hydrodynamics:  [http://cua.mit.edu/8.422/HANDOUTS/BECinDiluteGases165-179.pdf handout pp. 165-179] (link broken)
* Mott insulator transition
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**'''2009 Class Notes''' [[File:AMO_class_BEC_09-05-04_short.pdf]]
* Ultracold Fermi gases  
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**     [http://cua.mit.edu/8.422/HANDOUTS/AMO%20class%20III.pdf Slides on MI transition and BEC-BCS crossover in ultracold fermions]
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* [[Ultracold Fermi gases]]
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** [[Ideal Fermi Gas]]
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** [[Attractively Interacting Fermi gases - Pairing Instability]]
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** [[BEC-BCS Crossover]]
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** [[Repulsively Interacting Fermi gases - Stoner Instability]]
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** Further reading:  Varenna summer school notes: [[File:Kett08 Varenna notes Fermi Gases.pdf]] 
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**'''2009 Class notes''' [[File:AMO Fermions 2009.pdf]]
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[[Category:8.422]]

Latest revision as of 15:46, 22 May 2017

In this chapter, we discuss the three paradigmatic accomplishment of the field of cold atoms: Bose-Einstein condensation, the superfluid to Mott insulator transition, and superfluid Fermi gases., These are three current frontiers of research, all made possible by the combination of laser cooling and evaporative cooling. In the first section of this chapter, we present evaporative cooling and magnetic trapping, the two key techniques to achieve the nanokelvin temperature range (although more recently, evaporative cooling in optical traps has been used).

We hope that in the near future, we can add another section to this chapter, the study of magnetism in spin systems, realized with ultracold bosons and fermions. This goal is currently pursued in several labs.