Difference between revisions of "Quantum gases"

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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).
 
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.
 
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.
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*[[Quantum Scattering Theory]]
  
* [[Techniques for cooling to ultralow temperatures]]
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* [[Ultracold Bosons]]
** Magnetic trapping and evaporative cooling (2009 [https://cua-admin.mit.edu:8443/wiki/images/9/98/Magnetic_trappping_and_evaporative_cooling.pdf Class notes])
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** [[Ideal Bose Gas]]
* Ultracold Bosons 
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** [[Weakly Interacting Homogeneous Bose Gas]]
** 2009 [https://cua-admin.mit.edu:8443/wiki/images/a/a6/AMO_class_BEC_09-05-04_short.pdf Class notes]
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** [[Inhomogeneous Bose Gas]]
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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)
** Superlfuid to Mott insulator transition:  [https://cua-admin.mit.edu:8443/wiki/images/b/b9/PRA_Stoof_MI_e053601.pdf Original paper on analytic decoupling solution]
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**'''2009 Class Notes''' [[File:AMO_class_BEC_09-05-04_short.pdf]]
* [[Superfluid to Mott insulator transition]]
 
 
 
* Ultracold Fermi gases
 
** 2009 [https://cua-admin.mit.edu:8443/wiki/images/3/31/AMO_Fermions_2009.pdf Class notes]
 
** Further reading:  [https://cua-admin.mit.edu:8443/wiki/images/8/8e/Kett08_Varenna_notes_Fermi_Gases.pdf Varenna summer school notes] pp. 82-94
 
 
 
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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.