Author： Vaníček Jiří
Publisher： Swiss Chemical Society
ISSN： 0009-4293
Source： CHIMIA International Journal for Chemistry, Vol.65, Iss.9, 2011-09, pp. : 715-719
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Abstract
Nuclear tunneling and other nuclear quantum effects have been shown to play a significant role in molecules as large as enzymes even at physiological temperatures. I discuss how these quantum phenomena can be accounted for rigorously using Feynman path integrals in calculations of the equilibrium and kinetic isotope effects as well as of the temperature dependence of the rate constant. Because these calculations are extremely computationally demanding, special attention is devoted to increasing the computational efficiency by orders of magnitude by employing efficient path integral estimators.
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