Quantum fluids: Difference between revisions
Jump to navigation
Jump to search
imported>Sekhar Talluri m (fix minor typos) |
mNo edit summary |
||
| (One intermediate revision by one other user not shown) | |||
| Line 1: | Line 1: | ||
A quantum fluid is a fluid where the mean distance between the particles is less than or comparable to the thermal de Broglie wavelength <math> h / \sqrt{(2 \pi m k T)}</math>, where | {{subpages}} | ||
: <math> h </math> is | A '''quantum fluid''' is a fluid where the mean distance between the particles is less than or comparable to the thermal de Broglie wavelength | ||
: <math> m </math> is the mass of the particles of the fluid | :<math> \Lambda = h / \sqrt{(2 \pi m k T)}</math>, | ||
: <math> k </math> is the Boltzmann | where | ||
: <math> T </math> is the temperature. | : <math>\, h </math> is [[Planck's constant]] | ||
In such | : <math>\, m </math> is the [[mass]] of the particles of the fluid | ||
: <math>\, k </math> is the [[Boltzmann constant]] and | |||
: <math>\, T </math> is the absolute [[temperature]]. | |||
In such a case there is a strong overlap of [[wave function]]s of adjacent particles and hence quantum statistics ([[Bose-Einstein]] or [[Fermi-Dirac]]) is applicable. This often results in unusual observable macroscopic phenomena, such as superfluidity, superconductivity and other 'super' transport phenomena. | |||
Reference | ==Reference== | ||
*The extraordinary phases of liquid <math>^3</math>He. [http://nobelprize.org/nobel_prizes/physics/laureates/1996/lee-lecture.pdf Nobel lecture by D.M.Lee.][[Category:Suggestion Bot Tag]] | |||
Latest revision as of 07:00, 9 October 2024
A quantum fluid is a fluid where the mean distance between the particles is less than or comparable to the thermal de Broglie wavelength
- ,
where
- is Planck's constant
- is the mass of the particles of the fluid
- is the Boltzmann constant and
- is the absolute temperature.
In such a case there is a strong overlap of wave functions of adjacent particles and hence quantum statistics (Bose-Einstein or Fermi-Dirac) is applicable. This often results in unusual observable macroscopic phenomena, such as superfluidity, superconductivity and other 'super' transport phenomena.
Reference
- The extraordinary phases of liquid He. Nobel lecture by D.M.Lee.
