R. Cassol et al., CONFORMATIONAL DYNAMICS AND THE ROTATIONAL ISOMERIC STATE APPROXIMATION FOR ALKYL CHAINS, Journal of physics. Condensed matter, 6, 1994, pp. 10000279-10000284
The assumption of a timescale separation between conformational kineti
cs and torsional modes, implicit in the rotational isomeric state appr
oximation, is analysed on the basis of asymptotic solutions of a multi
dimensional diffusion equation.