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Free-energy calculations - Theoretical Biophysics Group

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Reaction coordinate–based free-<strong>energy</strong> <strong>calculations</strong> The algorithm<br />

52 DARVE, POHORILLE (2001); HÉNIN, CHIPOT (2004); CHIPOT,<br />

HÉNIN (2005)<br />

53 LELIÈVRE ET AL. (2007)<br />

Accrue the instantaneous force exerted<br />

along ξ in bins of finite size, δξ, and provide<br />

an estimate of dA(ξ)/dξ.<br />

The biasing force, − <br />

Fξ ∇ξ, is applied af-<br />

ξ<br />

ter a user-defined number of steps.<br />

ABF erases the roughness of the free <strong>energy</strong><br />

surface along ξ.<br />

The system is in principle driven only by<br />

its self–diffusion properties, granted that<br />

ξ is essentially decoupled from the slow<br />

manifolds. 52<br />

ABF formally converges. 53<br />

Chris Chipot <strong>Free</strong>-<strong>energy</strong> <strong>calculations</strong>

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