This collection explores the fascinating intersection where the laws of physics meet the complex machinery of chemistry. Here, researchers investigate how quantum mechanics governs molecular bonds, how light interacts with matter at the atomic scale, and how fundamental forces shape chemical reactions. It is a realm where abstract mathematical models collide with tangible substances to reveal the hidden mechanisms driving our material world.

On Gist.Science, we process every new preprint in this category directly from arXiv to make these discoveries accessible to everyone. Whether you are a seasoned expert or a curious reader, you will find both plain-language explanations and detailed technical summaries for each paper. Below are the latest contributions from the community pushing the boundaries of physical chemistry.

AceFF: A State-of-the-Art Machine Learning Potential for Small Molecules

The paper introduces AceFF, a state-of-the-art, pre-trained machine learning interatomic potential based on the TensorNet2 architecture that achieves DFT-level accuracy and high-throughput speed for small molecule drug discovery while explicitly supporting essential medicinal chemistry elements and charged states.

Stephen E. Farr, Stefan Doerr, Antonio Mirarchi, Francesc Sabanes Zariquiey, Gianni De Fabritiis2026-03-17🔬 physics

Förster resonance energy transfer with transient coherent effects

This paper generalizes Förster resonance energy transfer theory to ultrafast nonlinear regimes by deriving a formally exact, time-non-local master equation that captures transient coherent effects and initial condition slippage, thereby improving upon traditional formulations and extending validity to limits of vanishing system-bath coupling.

Maximilian Meyer-Mölleringhof, Pablo Martinez-Azcona, Aurélia Chenu, Tomáš Mančal2026-03-17🔬 physics

Adaptive tensor train metadynamics for high-dimensional free energy exploration

This paper introduces TT-Metadynamics, a scalable method that compresses the bias potential in metadynamics into a low-rank tensor train representation using a sketching algorithm, thereby enabling efficient free energy exploration in high-dimensional systems with up to 14 collective variables without the exponential computational cost of standard approaches.

Nils E. Strand, Siyao Yang, Yuehaw Khoo, Aaron R. Dinner2026-03-17🔬 physics

Revealing Hydroxide Ion Transport Mechanisms in Commercial Anion-Exchange Membranes at Nano-Scale from Machine-learned Interatomic Potential Simulations

This study employs large-scale molecular dynamics simulations with machine-learned interatomic potentials to reveal that hydroxide ion transport in commercial anion-exchange membranes is critically dependent on hydration levels, where sufficient water content forms connected hydrogen-bond networks that enable efficient long-range diffusion, thereby linking nano-scale structural dynamics to macroscopic performance for green hydrogen production.

Jonas Hänseroth, Muhammad Nawaz Qaisrani, Mostafa Moradi, Karl Skadell, Christian Dreßler2026-03-17🔬 cond-mat.mtrl-sci

A Primary Unified Geometric Framework of Molecular Reaction Dynamics Based on the Variational Principle

This paper proposes a unified geometric framework for molecular reaction dynamics that integrates the variational principle, curved spacetime physics, and AI techniques to construct a nuclear Hamiltonian in nonzero curvature, thereby enabling the natural introduction of geometric phases and gauge fields while offering new optimization-based insights for solving the Schrödinger equation.

Xingyu Zhang, Jinke Yu, Qingyong Meng2026-03-17🔬 physics

Systematically Improvable Numerical Atomic Orbital Basis Using Contracted Truncated Spherical Waves

This paper presents a systematically improvable numerical atomic orbital basis set constructed by contracting truncated spherical waves to minimize kinetic operator spillage, which enhances transferability and eliminates spurious periodic interactions while achieving high precision across diverse molecular and bulk properties.

Yike Huang, Zuxin Jin, Linfeng Zhang, Mohan Chen, Rui Chen, Ling Li2026-03-17🔬 physics

Universal method of selective detection of a wide range of pollutants in liquids using conductance quantization

This paper presents a universal detection method utilizing quantum point-contact sensors based on conductance quantization to rapidly and selectively identify a wide spectrum of pollutants, including heavy metal ions and organic solvents, in liquid media at trace concentrations.

O. Pospelov, A. Herus, A. Savytskyi, V. Vakula, M. Sakhnenko, N. Kalashnyk, E. Faulques, G. Kamarchuk2026-03-17✓ Author reviewed 🔬 physics

The Python Simulations of Chemistry Framework: 10 years of an open-source quantum chemistry project

This paper reviews the major advancements of the open-source PySCF framework over the past decade, highlighting new modules, methodologies, infrastructure changes, and performance benchmarks since its 2020 overview.

Qiming Sun, Matthew R Hermes, Xiaojie Wu, Huanchen Zhai, Xing Zhang, Abdelrahman M. Ahmed, Juan José Aucar, Oliver J. Backhouse, Samragni Banerjee, Peng Bao, Nikolay A. Bogdanov, Kyle Bystrom, Fré (…)2026-03-17🔬 physics

Carbon black and hydrogen production from methane pyrolysis: measured and modeled insights from integrated gas and particle diagnostics in shock tubes

This study integrates shock tube experiments and modeling to characterize methane pyrolysis for co-producing hydrogen and carbon black, providing critical benchmarks on gas-phase kinetics, particle formation dynamics, and nanostructure evolution to improve predictive models.

Gibson Clark, Mohammad Adib, Chengze Li, Taylor M. Rault, Jesse W. Streicher, Enoch Dames, M. Reza Kholghy, Ronald K. Hanson2026-03-17🔬 physics