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.

Active Learning for Generalizable Detonation Performance Prediction of Energetic Materials

This paper presents an active learning workflow that integrates density functional theory, thermochemical modeling, and machine learning to screen over 70 billion candidates, resulting in a generalizable predictive model and the largest public database of CHNO explosives to date, which reveals oxygen balance as the primary driver of detonation performance.

R. Seaton Ullberg, Megan C. Davis, Jeremy N. Schroeder, Andrew H. Salij, M. J. Cawkwell, Christopher J. Snyder, Wilton J. M. Kort-Kamp, Ivana Matanovic2026-04-13🔬 physics

Cryogenic hydrogen embrittlement of 316plus (EN 1.4420) stainless steel at 77 K and 20 K

This study presents the first experimental characterization of 316plus (EN 1.4420) stainless steel, revealing that while hydrogen precharging causes a modest strength reduction and significant ductility loss (40–50%) at cryogenic temperatures (77 K and 20 K), the material retains notable ductility (~30% reduction in area), confirming its suitability for liquid hydrogen storage applications.

W. Li, A. Zafra, L. Armendariz, Z. Wang, W. Bailey, E. Martinez-Pañeda2026-04-13🔬 physics.app-ph

The Fate of Frozen Carbonated Water at Europa-like Conditions

Experiments simulating Europa-like conditions reveal that while CO2 can be retained in frozen ice and brines via clathrate hydrates or other mechanisms up to 140 K, the resulting infrared spectral signatures do not match those observed by JWST, suggesting that Europa's surface CO2 is unlikely to originate directly from the subsurface ocean without additional processing.

Swaroop Chandra, William T. P. Denman, Michael E. Brown2026-04-13🔭 astro-ph

Experimental proof of strong Π\Pi-Σ\Sigma mixing in the Renner-Teller and Pseudo-Jahn-Teller affected CCH+^+ (3Π^3\Pi) ion

Using leak-out spectroscopy and a validated three-state diabatic model, researchers experimentally demonstrated that the ethynyl radical cation (CCH+^+) exhibits exceptionally strong Π\Pi-Σ\Sigma mixing driven by Renner-Teller and pseudo-Jahn-Teller effects, where even zero-point vibrational motion is sufficient to disrupt its vibronic structure.

Kim Steenbakkers, P. Bryan Changala, Weslley G. D. P. Silva, John F. Stanton, Filippo Lipparini, Jürgen Gauss, Oskar Asvany, Gerrit C. Groenenboom, Britta Redlich, Stephan Schlemmer, Sandra Brünke (…)2026-04-13🔬 physics

Linking Calendar and Cycle Ageing in Lithium-Ion Batteries through Consistent Parameterisation of an Electrochemical-Thermal-Degradation Model

This paper presents a consistently parameterized electrochemical-thermal-degradation model using PyBaMM to predict the capacity fade, state-of-health, and remaining useful life of NMC lithium-ion cells under 81 distinct calendar and cyclic ageing conditions, thereby providing mechanistic insights into the competing effects of solid-electrolyte interphase growth, lithium plating, and active material loss.

Ganesh Madabattula2026-04-13🔬 cond-mat.mtrl-sci

Limitations of MRSF-TDDFT for Applications in Photochemistry

This paper critically evaluates Mixed-reference spin-flip time-dependent density functional theory (MRSF-TDDFT) for photochemical applications, identifying two key limitations—the trade-off between doubly- and singly-excited configurations and the instability caused by abrupt changes in the triplet reference state—and proposes strategies to detect these issues in potential energy surface and nonadiabatic dynamics studies.

Jiří Janoš, Andrew J. Orr-Ewing, Basile F. E. Curchod, Petr Slavíček2026-04-13🔬 physics

Integral-equation analysis of transient diffusion-limited currents at disk electrodes: Asymptotic expansion and compact approximation

This paper presents a novel analytical framework based on a Fredholm integral equation and Padé approximants to derive a compact, explicit expression for transient diffusion-limited currents at disk electrodes, offering a practical and accurate alternative to existing numerical methods for chronoamperometric analysis.

Kazuhiko Seki, Yuko Yokoyama, Masahiro Yamamoto2026-04-13🔬 physics

Transferable FB-GNN-MBE Framework for Potential Energy Surfaces: Data-Adaptive Transfer Learning in Deep Learned Many-Body Expansion Theory

This paper introduces the FB-GNN-MBE framework, which integrates fragment-based graph neural networks with many-body expansion theory to achieve chemically accurate potential energy surface predictions for large molecular systems and demonstrates a transferable teacher-student learning protocol that enables efficient, data-adaptive modeling across diverse water clusters without retraining.

Siqi Chen, Zhiqiang Wang, Yili Shen, Xianqi Deng, Xi Cheng, Cheng-Wei Ju, Jun Yi, Guo Ling, Dieaa Alhmoud, Hui Guan, Zhou Lin2026-04-13🔬 physics