TY - JOUR
T1 - On frequency-dependent and time-dependent diffusivities
AU - Halpern, V.
PY - 1992
Y1 - 1992
N2 - The time-dependent diffusivity D(t) is usually defined as the coefficient that appears in the diffusion equation, while the frequency-dependent diffusivity D( omega ) is defined the Fourier transform of the velocity-velocity correlation function. D( omega )/(i omega ), rather than D( omega ), is the Fourier transform of D(t).
AB - The time-dependent diffusivity D(t) is usually defined as the coefficient that appears in the diffusion equation, while the frequency-dependent diffusivity D( omega ) is defined the Fourier transform of the velocity-velocity correlation function. D( omega )/(i omega ), rather than D( omega ), is the Fourier transform of D(t).
UR - http://www.scopus.com/inward/record.url?scp=36149029599&partnerID=8YFLogxK
U2 - 10.1088/0143-0807/13/4/006
DO - 10.1088/0143-0807/13/4/006
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AN - SCOPUS:36149029599
SN - 0143-0807
VL - 13
SP - 184
EP - 185
JO - European Journal of Physics
JF - European Journal of Physics
IS - 4
M1 - 006
ER -