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| 024 | 7 | _ | |a 10.1021/acs.jpclett.1c02135 |2 doi |
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| 100 | 1 | _ | |a Parrinello, Michele |0 P:(DE-HGF)0 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Targeted Free Energy Perturbation Revisited: Accurate Free Energies from Mapped Reference Potentials |
| 260 | _ | _ | |a Washington, DC |c 2021 |b ACS |
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| 520 | _ | _ | |a We present an approach that extends the theory of targeted free energy perturbation (TFEP) to calculate free energy differences and free energy surfaces at an accurate quantum mechanical level of theory from a cheaper reference potential. The convergence is accelerated by a mapping function that increases the overlap between the target and the reference distributions. Building on recent work, we show that this map can be learned with a normalizing flow neural network, without requiring simulations with the expensive target potential but only a small number of single-point calculations, and, crucially, avoiding the systematic error that was found previously. We validate the method by numerically evaluating the free energy difference in a system with a double-well potential and by describing the free energy landscape of a simple chemical reaction in the gas phase. |
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| 700 | 1 | _ | |a Rizzi, Andrea |0 P:(DE-Juel1)180791 |b 1 |u fzj |
| 700 | 1 | _ | |a Carloni, Paolo |0 P:(DE-Juel1)145614 |b 2 |e Corresponding author |
| 773 | _ | _ | |a 10.1021/acs.jpclett.1c02135 |g Vol. 12, no. 39, p. 9449 - 9454 |0 PERI:(DE-600)2522838-9 |n 39 |p 9449–9454 |t The journal of physical chemistry letters |v 12 |y 2021 |x 1948-7185 |
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