Computational physics bridges the gap between abstract theory and real-world observation by using powerful computers to solve complex physical problems. This field allows scientists to simulate everything from the collision of subatomic particles to the swirling dynamics of galaxies, offering insights that traditional experiments alone cannot provide.

On Gist.Science, we continuously process every new preprint in this category from arXiv to make these breakthroughs accessible to everyone. Each entry is accompanied by both a clear, plain-language explanation and a detailed technical summary, ensuring that researchers and curious readers alike can grasp the significance of the latest findings without getting lost in dense equations.

Below are the latest papers in computational physics, curated to keep you at the forefront of this rapidly evolving discipline.

A Stochastic Cluster Expansion for Electronic Correlation in Large Systems

This paper introduces a stochastic cluster expansion framework that enables near-DMRG accuracy for total correlation energies in large condensed-phase systems by combining exactly treated subspaces with randomly sampled environment orbitals, thereby eliminating the need for prior active space selection and facilitating high-accuracy studies of chemical processes in complex environments.

Annabelle Canestraight, Anthony J. Dominic, Andres Montoya-Castillo, Libor Veis, Vojtech Vlcek2026-02-17🔬 cond-mat.mtrl-sci

Non-uniqueness of smooth solutions of the Navier-Stokes equations from almost the same initial conditions

This paper presents numerical evidence using Clean Numerical Simulation suggesting that the Navier-Stokes equations may admit distinct global solutions arising from initial conditions differing by as little as 104010^{-40}, thereby challenging the uniqueness of smooth solutions and offering new insights into the associated Millennium Prize Problem.

Shijun Liao, Shijie Qin2026-02-17🌀 nlin

Quantum Algorithm Framework for Phase-Contrast Transmission Electron Microscopy Image Simulation

This paper presents a fault-tolerant quantum algorithmic framework for simulating phase-contrast transmission electron microscopy image formation, which leverages quantum Fourier transforms to efficiently model wave propagation and specimen interactions while offering quantum advantages for specific Fourier-space queries and global statistics despite the measurement overhead required for full image reconstruction.

Sean D. Lam, Roberto dos Reis2026-02-17🔬 cond-mat.mtrl-sci

Auxiliary field quantum Monte Carlo at the basis set limit: application to lattice constants

This paper presents a plane-wave implementation of auxiliary-field quantum Monte Carlo within the PAW formalism in VASP that operates at the complete basis set limit with cubic scaling, achieving high-accuracy predictions of lattice constants and bulk moduli for C, BN, BP, and Si by correcting deficiencies in MP2 and RPA methods.

Moritz Humer, Martin Schlipf, Zoran Sukurma, Sajad Bazrafshan, Georg Kresse2026-02-17🔬 physics

An open-source computational framework for immersed fluid-structure interaction modeling using FEBio and MFEM

This paper presents a novel open-source immersed fluid-structure interaction framework that synergistically couples the high-performance, GPU-ready MFEM library with the biomechanics-focused FEBio solver to enable robust, scalable simulations of complex biological systems like heart valves.

Ryan T. Black, Steve A. Maas, Wensi Wu, Jalaj Maheshwari, Tzanio Kolev, Jeffrey A. Weiss, Matthew A. Jolley2026-02-13🧬 q-bio