Collapse of a macroscopic Bose-Einstein condensate

In summary, the conversation discusses the propagation of the collapse of a macroscopic Bose-Einstein condensate caused by a point-like perturbation. The speaker mentions that a local perturbation cannot lead to a global collapse and suggests using the Ginzburg-Landau equation to calculate the collapse propagation. They also mention that this problem has been considered by Russian scientists in relation to magnetic flux tubes.
  • #1
tom.stoer
Science Advisor
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Consider a macroscopic Bose-Einstein condensate. Are there experimental results regarding the propagation (in space and time) of the collapse of this state caused by a point-like perturbation?
 
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  • #2
I don't quite understand what you mean. If it is a macroscopic condensate, a local perturbation can never lead to a global collapse.
 
  • #3
Perturbing (e.g. heating) the condensate locally for a longer time may collapse the state globally - but not instantaneously; how does the collapse propagate?
 
  • #4
Probably you can calculate it using the Ginzburg-Landau equation. Suppose that Abrikosov and other russians have considered this as it seems to be similar to problems involving e.g. magnetic flux tubes.
 

Related to Collapse of a macroscopic Bose-Einstein condensate

1. What is a Bose-Einstein condensate (BEC)?

A Bose-Einstein condensate is a state of matter that occurs at extremely low temperatures, close to absolute zero. It is formed when a large number of bosons (particles with integer spin) occupy the same quantum state, leading to a collective behavior of the particles.

2. How is a macroscopic BEC different from a regular BEC?

A macroscopic BEC is a Bose-Einstein condensate that consists of a large number of particles, typically on the order of millions. This is in contrast to a regular BEC, which contains only a few thousand particles. The properties and behavior of a macroscopic BEC are different from a regular BEC due to the large number of particles involved.

3. What causes the collapse of a macroscopic BEC?

The collapse of a macroscopic BEC is caused by the attractive interactions between the particles in the condensate. As the number of particles increases, the attractive forces become stronger, eventually leading to a collapse of the condensate.

4. How can scientists control the collapse of a macroscopic BEC?

Scientists can control the collapse of a macroscopic BEC by manipulating the external conditions, such as the temperature and the strength of the trapping potential. By adjusting these parameters, they can balance the attractive and repulsive forces within the condensate and prevent it from collapsing.

5. What are the potential applications of studying the collapse of a macroscopic BEC?

Studying the collapse of a macroscopic BEC can provide insights into the behavior of matter at extremely low temperatures and in the presence of strong interactions. This knowledge can be applied to various fields, such as quantum computing, precision measurements, and understanding the properties of other complex systems.

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