Physics – Condensed Matter – Materials Science
Scientific paper
2007-11-13
Physics
Condensed Matter
Materials Science
1 text archive, 3 figures
Scientific paper
10.1103/PhysRevE.76.062502
One of the main elements of the self-consistent generalized Langevin equation (SCGLE) theory of colloid dynamics [Phys. Rev. E {\bf 62}, 3382 (2000); ibid {\bf 72}, 031107 (2005)] is the introduction of exact short-time moment conditions in its formulation. The need to previously calculate these exact short-time properties constitutes a practical barrier for its application. In this note we report that a simplified version of this theory, in which this short-time information is eliminated, leads to the same results in the intermediate and long-time regimes. Deviations are only observed at short times, and are not qualitatively or quantitatively important. This is illustrated by comparing the two versions of the theory for representative model systems.
Chávez-Rojo Marco Antonio
Juárez-Maldonado Rigoberto
Medina-Noyola Magdaleno
Ramírez-González Pedro E.
Yeomans-Reyna Laura L.
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