Can Photons Undergo Einstein-Bose Condensation?

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Einstein-Bose condensation in photons is a debated topic, primarily due to the lack of photon number conservation in lasers, which are often cited as examples of coherent quantum light. While lasers exhibit some properties of a condensate, they are considered out-of-equilibrium systems and do not represent a stable thermodynamic phase like traditional matter BECs. The discussion also touches on the characteristics of photon wave properties in a potential condensate state. Additionally, there is a request for examples of Bose-Einstein condensates found in nature, indicating interest in real-world applications and manifestations of the phenomenon. The complexities of photon behavior and the definitions of condensates remain central to this ongoing discussion.
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Can Einstein-Bose condensation occur in photons and if so what is this new state like for the photon , how are its wave properties?
 
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Lasers are decent examples of macroscopically coherent quantum light. Whether you want to call it a condensate is a bit debatable, since there is no conservation of photon number in a laser. Lasers are driven out-of-equilibrium systems, so it is not a thermodynamic stable phase of light, whereas the matter BECs really are new equilibrium phases of quantum matter.
 
i see what makes a condensate a condensate .
 
can you give me examples of b
ose condensate found in nature
 
danahruth said:
can you give me examples of b
ose condensate found in nature
please
 
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