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physicsnoob12
- 15
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i am not exactly sure what happens when the temperature almost reaches absolute zero how things react to this drop and what are boson ( sorry for spelling errors)
dydxforsn said:Light is a good example of a boson, and what you see when you view light is a macroscopic wavefunction for the individual photons contained inside (I believe, I may have misunderstood Feynmen about all this though).
dydxforsn said:I actually have a question for everyone while we're on the subject. I remember in my undergraduate statistical mechanics class when our professor briefly mentioned that superfluid helium wasn't actually a Bose-Einstein Condensate. Can someone tell me more on the differences and exactly what he was talking about? I was always a little confused by what he meant.. It's possible that he mis-spoke as well.
Cthugha said:This is true, but it should be stressed that it is only the superfluid fraction that approaches 100%, not the condensate fraction. Due to strong depletion of the ground state caused by the interactions, the condensate fraction is much less, on the order of 10% and the excitation spectrum becomes well populated.
Absolute zero is the lowest possible temperature, also known as 0 Kelvin or -273.15 degrees Celsius. At this temperature, all atomic motion stops, making it impossible to get any colder.
Bosons are particles that follow Bose-Einstein statistics, which govern how they behave at low temperatures. As the temperature approaches absolute zero, Boson particles start to clump together, forming a Bose-Einstein condensate, a unique state of matter.
Exploring absolute zero and its related phenomena can help us better understand the behavior of matter and energy at extreme temperatures. This knowledge can have practical applications in fields such as quantum computing and superconductivity.
While it is theoretically possible to reach absolute zero, it is impossible to do so in practice. The amount of energy required to cool a substance to absolute zero is infinite, making it physically impossible to reach this temperature.
Absolute zero plays a crucial role in the formation and evolution of the universe. It is believed that the universe started at absolute zero and then underwent a rapid expansion known as the Big Bang. Additionally, absolute zero can affect the behavior of particles in the universe, leading to phenomena such as superfluidity and superconductivity.