Abstract
A number of enhanced sampling methods have been developed to overcome the length and time scale barriers of classical simulations. Metadynamics has made considerable strides in the last decade as a technique for constructing free energy landscapes as a function of a few low-dimensional descriptors of atomic positions, commonly referred to as collective variables (CVs). In particular, parallel bias metadynamics (PBMetaD) and its variants enable the sampling of many CVs without prohibitively increasing simulation time. This parallelizable scheme allows for its implementation in systems that necessitate the use of more than a few CVs, or in the case that the CVs corresponding to the slowest modes of a process are not easily identifiable. Here, we present a review of notable enhanced sampling schemes with a focus on the underlying theory of PBMetaD. We discuss various examples, where this method has been applied and future areas of impact.
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This work was supported in part by NSF award MCB-1715123 and NIH award 1R21DE026959-01
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Alamdari, S., Sampath, J., Prakash, A., Gibson, L.D., Pfaendtner, J. (2021). Efficient Sampling of High-Dimensional Free Energy Landscapes: A Review of Parallel Bias Metadynamics. In: Maginn, E.J., Errington, J. (eds) Foundations of Molecular Modeling and Simulation. Molecular Modeling and Simulation. Springer, Singapore. https://doi.org/10.1007/978-981-33-6639-8_6
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