Browsing Física by Author "García-Colin, LS"

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Compatibility of Landauer diffusion coefficient with classical transport theory

Godoy, S; García-Colin, LS (1999)

Mesoscopic diffusion in the ballistic regime has long been recognized to be described by the non-local Landauer diffusion coefficient: D = cLT/(2R). This is an incoherent result because, in its derivation, the quantum ...
Generalized Landauer equation: Absorption-controlled diffusion processes

Godoy, S; Micenmacher, V; García-Colin, LS (1999)

The exact expression of the one-dimensional Boltzmann multiple-scattering coefficients, for the passage of particles through a slab of a given material, is obtained in terms of the single-scattering cross section of the ...
Generalized two stream theory for photon migration

Godoy, S; Olivares-Robles, MA; García-Colin, LS (1998)

Recent work has indicated that a telegrapher's type equation may accurately describe the diffusion of photons in highly turbid media, specially during the ballistic regime of the process. On the other hand, calculations ...
Mesoscopic diffusion as a non-Markov process

Godoy, S; García-Colin, LS (1998)

We use both classical and quantum S-matrix theories to derive expressions for the ballistic diffusion current of a 1D mesoscopic crystalline solid. For both theories, we get the same local Fick's law, thus proving that ...

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