منابع مشابه
Linking ultracold polar molecules.
We predict that pairs of polar molecules can be weakly bound together in an ultracold environment, provided that a dc electric field is present. The field that links the molecules together also strongly influences the basic properties of the resulting dimer, such as its binding energy and predissociation lifetime. Because of their long-range character, these dimers will be useful in disentangli...
متن کاملUltracold Fermionic Feshbach Molecules
Date J The final copy of this thesis has been examined by the signatories, and we find that both the content and the form meet acceptable presentation standards of scholarly work in the above mentioned discipline. This thesis presents experiments creating heteronuclear diatomic molecules from ultracold mixtures of atomic bosons and fermions. The work presented takes advantage of a type of scatt...
متن کاملUltracold collisions of oxygen molecules
Collision cross sections and rate constants between two ground-state oxygen molecules are investigated theoretically at translational energies below ;1 K and in zero magnetic field. We present calculations for elastic and spin-changing inelastic collision rates for different isotopic combinations of oxygen atoms as a prelude to understanding their collisional stability in ultracold magnetic tra...
متن کاملUltracold hydrogen atoms: a versatile coolant to produce ultracold molecules.
We show theoretically that ultracold hydrogen atoms have very favorable properties for sympathetic cooling of molecules to microkelvin temperatures. We calculate the potential energy surfaces for spin-polarized interactions of H atoms with the prototype molecules NH(3Σ-) and OH(2Π) and show that they are shallow (50 to 80 cm(-1)) and only weakly anisotropic. We carry out quantum collision calc...
متن کاملA dipolar gas of ultracold molecules.
Ultracold polar molecular gases promise new directions and exciting applications in collisions and chemical reactions at ultralow energies, precision measurements, novel quantum phase transitions, and quantum information science. Here we briefly discuss key experimental requirements for observing strong dipole-dipole interactions in an ultracold dipolar gas of molecules. We then survey current ...
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ژورنال
عنوان ژورنال: Europhysics News
سال: 2002
ISSN: 0531-7479,1432-1092
DOI: 10.1051/epn:2002601