no code implementations • 27 Feb 2024 • Luis Itza Vazquez-Salazar, Silvan Käser, Markus Meuwly
Uncertainty quantification (UQ) to detect samples with large expected errors (outliers) is applied to reactive molecular potential energy surfaces (PESs).
1 code implementation • 5 Nov 2021 • Julian Arnold, Juan Carlos San Vicente Veliz, Debasish Koner, Narendra Singh, Raymond J. Bemish, Markus Meuwly
Overall, the prediction accuracy as quantified by the root-mean-squared difference $(\sim 0. 003)$ and the $R^2$ $(\sim 0. 99)$ between the reference QCT and predictions of the STD model is high for the test set and off-grid state specific initial conditions and for initial conditions drawn from reactant state distributions characterized by translational, rotational and vibrational temperatures.
no code implementations • 11 Mar 2021 • Juan Carlos San Vicente Veliz, Debasish Koner, Max Schwilk, Raymond J. Bemish, Markus Meuwly
Thermal rates for the C($^3$P) + O$_2$($^3 \Sigma_g^-$) $\leftrightarrow$ CO($^1 \Sigma^+$)+ O($^1$D)/O($^3$P) reaction are investigated over a wide temperature range based on quasi classical trajectory (QCT) simulations on 3-dimensional, reactive potential energy surfaces (PESs) for the $^1$A$'$, $(2)^1$A$'$, $^1$A$''$, $^3$A$'$ and $^3$A$''$ states.
Chemical Physics
no code implementations • 9 Mar 2021 • Silvan Käser, Eric Boittier, Meenu Upadhyay, Markus Meuwly
The calculation of the anharmonic modes of small to medium sized molecules for assigning experimentally measured frequencies to the corresponding type of molecular motions is computationally challenging at sufficiently high levels of quantum chemical theory.
Transfer Learning Chemical Physics
no code implementations • 12 Feb 2021 • Seyedeh Maryam Salehi, Markus Meuwly
Attaching azide to alanine residues can yield dynamics that decays to zero on the few ps time scale (i. e. static component $\Delta_0 \sim 0$ ps$^{-1}$) or to a remaining, static contribution of $\sim 0. 5$ ps$^{-1}$ (corresponding to 2. 5 cm$^{-1}$), depending on the local environment on the 10 ps time scale.
Biological Physics
no code implementations • 21 Nov 2019 • Silvan Käser, Oliver T. Unke, Markus Meuwly
It is used to run finite-temperature molecular dynamics simulations, and to determine the infrared spectra and the hydrogen transfer rates for the three molecules.
Chemical Physics
6 code implementations • J. Chem. Theory Comput. 2019 • Oliver T. Unke, Markus Meuwly
Further, two new datasets are generated in order to probe the performance of ML models for describing chemical reactions, long-range interactions, and condensed phase systems.
Ranked #6 on Formation Energy on QM9
Drug Discovery Formation Energy Chemical Physics