Quantum fluids: Difference between revisions

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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 the Planck's constant
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's constant and
where
: <math> T </math> is the temperature.
: <math>\, h </math> is [[Planck's constant]]
In such cases there is a strong overlap of wavefunctions of adjacent particles and hence quantum statistics are applicable.  This often results in unusual observable macroscopic phenomena, such as superfluidity, superconductivity and other 'super' transport phenomena.
: <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: The extraordinary phases of liquid <math>^3</math>He. Nobel lecture by D.M.Lee. (http://nobelprize.org/nobel_prizes/physics/laureates/1996/lee-lecture.pdf)
==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]]

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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