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Quantum Bum
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When something is frozen fully, and the temperature is absolute zero -there is no entropy - but does that mean the "quantum jitters" are not occurring?
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Drakkith said:What are quantum jitters exactly?
HallsofIvy said:What that means is that you cannot have something at "absolute zero". Absolute zero means no motion at all. As long as you sure the object whose temperature you are lowering is in the same building with you Heisenberg uncertainty means the speed of the atoms making up the object cannot be 0.
HallsofIvy said:What that means is that you cannot have something at "absolute zero". Absolute zero means no motion at all. As long as you sure the object whose temperature you are lowering is in the same building with you Heisenberg uncertainty means the speed of the atoms making up the object cannot be 0.
f95toli said:This is -as Camboy has already mentioned- not quite correct. According to what I would consider to be "mainstream" QM things DO move even at absolute zero.
See e.g. Gardiner's book on Quantum Noise (as far as I remember there is even a calculation in there showing how fast an electron would move due to ZPE random-walk motion, a very small but non-zero number)
Quantum Bum said:So quantum zero-point motion -vibrations, or are you saying more then this?
Absolute zero is the lowest possible temperature that can be reached, at which point a thermodynamic system has no thermal energy and all molecular motion stops.
Entropy is a measure of the disorder or randomness in a system. At absolute zero, there is no thermal energy to drive molecular motion, resulting in a state of zero entropy.
Quantum jiggles, also known as zero-point energy, are small fluctuations in energy that occur even at absolute zero due to the laws of quantum mechanics.
Absolute zero is considered an idealized limit and cannot be reached in a physical sense. However, scientists have been able to reach temperatures very close to absolute zero in laboratory settings.
Studying absolute zero and zero entropy helps us understand the fundamental laws of thermodynamics and quantum mechanics. It also has practical applications in fields such as cryogenics, superconductivity, and quantum computing.