1258 papers
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.
This paper presents the first successful *ab initio* simulation of non-equilibrium recombination in evolving ultracold plasmas by employing a co-moving reference frame and trajectory-based identification criteria, achieving a 20% recombination efficiency that aligns with laboratory measurements.
This paper introduces the Variable Coherence Model (VCM) to simulate free-electron laser pulses, demonstrating that a variable coherence width parameter enables continuous control over pulse noise and sub-pulse statistics while maintaining fixed average parameters, thereby bridging the gap between maximally random and fully coherent regimes for applications such as absorption simulations.
This paper introduces an extension of localized intrinsic bond orbitals (IBOs) to decode correlated charge migration dynamics, successfully mapping complex many-electron behaviors to intuitive chemical concepts like curly arrows and hyperconjugation while identifying key mechanisms and efficient molecules through high-level TDDMRG simulations.
This paper presents the public release of OpenGadget3, a cosmological hydrodynamical N-body code featuring a robust implementation of self-interacting dark matter that supports various elastic scattering cross-sections and two-species models, validated through accuracy tests and performance scaling.
This paper demonstrates that the optical extinction manifold of dielectric materials exhibits intrinsic sparsity best captured by the Discrete Cosine Transform rather than the FFT, enabling a compressed sensing architecture that achieves high-fidelity material reconstruction with a 51–94% reduction in hardware sensors by overcoming traditional Nyquist limits.
This paper presents a scalable, two-step framework that propagates chemical kinetics parameter uncertainties onto reduced manifolds to enable efficient, spatially resolved uncertainty quantification in high-fidelity reacting flow simulations, revealing significant variability in trajectory and equilibrium times driven by mixing and low-to-intermediate temperature chemistry.
This paper presents an ab initio quantum embedding workflow that derives interacting flat-band Hamiltonians for magic angle twisted bilayer graphene, revealing robust insulating states at and while uncovering a fragile semimetal with Kekulé modulation at and explaining the resulting particle-hole asymmetry through momentum-dependent single-particle renormalizations.
This paper introduces a gauge transformation that eliminates time-dependent onsite potentials by renormalizing hopping terms with phase factors, thereby simplifying time-ordered integrals and facilitating the simulation of pulse propagation in scattering systems.
This paper proposes and validates a simplified, trajectory-dependent local model for electronic stopping of light ions (hydrogen and helium) in tungsten, demonstrating its efficiency and physical transparency over complex tensorial formulations for atomistic simulations of energy dissipation.
This paper establishes a formal equivalence between the Lindblad equation and Path Integral Molecular Dynamics (PIMD), demonstrating how PIMD can be utilized to simulate the non-equilibrium time evolution and convergence of ensemble-averaged observables in large atomic systems without explicitly solving the Lindblad equation, while ensuring the physical consistency of the density operator's positivity.