- #1
yzxqdu
- 3
- 0
I saw "dressed molecule" in a paper about BEC, what is the meaning of it?
dressed molecules are essentially two-particle states that are a superposition of a tightly bound bare molecule, and two unbound bare atoms. This description reduces to the correct paired wave-function in the two-body limit. Moreover it gives a physically correct description of all the phenomena mentioned above: the Bose-condensation of a gas near a Feshbach resonance, that contains molecules, is more correctly interpreted as a Bose-condensation of dressed molecules. The fermionic superfluid contains a condensate of bosonic pairs, normally called Cooper pairs, that can be understood as the dressed molecules. For the latter case, the dressed-molecule picture also gives an elegant characterization of the crossover between a Bose condensate of pure molecules on one side of the resonance, to a fermionic Bardeen-Cooper-Schrieffer superfluid on the other side. Then, the dressed molecules change continuously from being mostly a bare molecule, to being mostly a loose pair of two atoms. It is clear that the nature of the dressed molecules is much determined by the probability for it to be in the bare-molecular state.
A dressed molecule refers to a molecule that has been coated or modified with a layer of material, typically for research or industrial purposes.
A molecule can be dressed through various methods such as chemical reactions, physical coatings, or molecular assembly techniques. This process involves attaching a layer of material to the surface of the molecule, altering its properties and behavior.
Dressing a molecule can provide several benefits, including improved stability and durability, enhanced physical and chemical properties, and increased functionality for specific purposes such as drug delivery or sensing applications.
Yes, any molecule can potentially be dressed, although some may be more difficult or costly to dress than others. The ability to dress a molecule depends on its chemical structure and reactivity, as well as the desired properties of the final dressed molecule.
Dressed molecules have a wide range of applications in various fields such as medicine, materials science, and environmental science. Some examples include drug delivery systems, self-cleaning surfaces, and sensors for detecting pollutants in the environment.