Clay weekly context brief for the Physics category (ISO week 2026-W36).

Clay tracks publications from the Physics feed list. Below are recent items from this category, each with its source and a short description of what the publication covers when one is available in the source feed.

Recent publications:
1. Double Porosity Models for Absolutely Rigid Body via Reiterated Homogenization
   Source: physics.flu-dyn (Fluid Dynamics)
   Link: https://arxiv.org/abs/0903.0809
   Double porosity models for the liquid filtration in an absolutely rigid body is derived from homogenization theory.
2. Electron Injection and Beam Dynamics in a Laser Wakefield Acceleration Driven by Laser Pulses Carrying Orbital Angular Momentum
   Source: physics.plasm-ph (Plasma Physics)
   Link: https://arxiv.org/abs/2608.15039
   Laser pulses carrying orbital angular momentum (OAM) provide a new degree of freedom for controlling plasma-based accelerators.
3. Operations, Maintenance, and Industrial Scaling of MW-Class Orbital Data Centers
   Source: physics.gen-ph (General Physics)
   Link: https://arxiv.org/abs/2608.27499
   Megawatt-class orbital data centers require continuous maintenance, replacement, inventory, and service capacity in addition to spacecraft power/thermal systems.
4. A reaction volume bias Monte Carlo trial for sampling chemisorption in confinement
   Source: physics.chem-ph (Chemical Physics)
   Link: https://arxiv.org/abs/2608.28516
   Molecular modeling of chemisorption with Monte Carlo requires the development of new trial moves to efficiently sample complex fluids such as water in Bronsted acid zeolites.
5. Full-field fluorescence computed tomography (F3CT) using a calibrated virtual cone-beam pinhole geometry
   Source: physics.acc-ph (Accelerator Physics)
   Link: https://arxiv.org/abs/2608.28275
   We present F3CT, a synchrotron-based hyperspectral full-field fluorescence computed tomography technique that avoids raster scanning by combining a pinhole aperture with an energy-resolving 2D detector.
6. A Gaussian-based spatially weighted loss formulation for Physics-Informed Neural Networks with Shocks
   Source: physics.flu-dyn (Fluid Dynamics)
   Link: https://arxiv.org/abs/2606.26013
   Physics-informed neural networks (PINNs) often struggle to resolve shocks because smooth neural representations and globally averaged residual losses tend to underemphasize localized high-gradient regions.
7. A Reduced-Order Particle-in-Cell Method with Azimuthal Fourier-Decomposed Fields for Nominally Axisymmetric Plasmas
   Source: physics.plasm-ph (Plasma Physics)
   Link: https://arxiv.org/abs/2606.04887
   A reduced-order Particle-in-Cell method is introduced for kinetic simulation of otherwise axisymmetric cylindrical plasmas that exhibit azimuthal instabilities.
8. Finite-domain inverse reconstruction of a Morris--Thorne-type wormhole candidate with a derivative-consistent $f(R)$ curvature sector
   Source: physics.gen-ph (General Physics)
   Link: https://arxiv.org/abs/2608.27485
   We present a finite-domain inverse reconstruction of a Morris--Thorne-type wormhole candidate as a methodological benchmark for constrained numerical model building in modified gravity.
9. Third-order Algebraic Diagrammatic Construction Renormalized by Particle-Particle Ladders
   Source: physics.chem-ph (Chemical Physics)
   Link: https://arxiv.org/abs/2608.28424
   The algebraic diagrammatic construction (ADC) of the electronic self-energy is based on Moller-Plesset perturbation theory.
10. Perturbative anomalous exponents from Kolmogorov multipliers
   Source: physics.flu-dyn (Fluid Dynamics)
   Link: https://arxiv.org/abs/2605.26359
   Intermittency, manifested through anomalous scaling, remains one of the central unresolved problems in turbulence theory, with few analytical approaches extending beyond idealized linear transport models.
11. Revealing the Nonlinear Amplification of Radiation Reaction Effects via Vortex Radiation
   Source: physics.plasm-ph (Plasma Physics)
   Link: https://arxiv.org/abs/2312.05580
   Radiation reaction (RR), the back-action of emitted radiation on an accelerated charge, dominates the dynamics of ultrarelativistic electrons in an intense electromagnetic field.
12. Model-free Reconstruction of Molecular Energy Levels by Broadband Kilohertz-accurate Cavity-enhanced Spectroscopy
   Source: physics.chem-ph (Chemical Physics)
   Link: https://arxiv.org/abs/2608.28025
   Assigning the lines of high-resolution molecular spectra to quantum states requires a Hamiltonian model and substantial expert intervention, so the spectra of larger molecules accumulate vast numbers of unassigned lines.
13. Stochastic Lorenz dynamics and wind reversals in Rayleigh-B\'enard Convection
   Source: physics.flu-dyn (Fluid Dynamics)
   Link: https://arxiv.org/abs/2602.16068
   The Lorenz equations [1] are a severe Galerkin-truncation of the Oberbeck-Boussinesq (OB) equations describing Rayleigh-B\'enard convection (RBC).
14. A high-frequency type II radio burst associated with an X2.3 class flare
   Source: physics.plasm-ph (Plasma Physics)
   Link: https://arxiv.org/abs/2608.28370
   Radio observations provide a powerful diagnostic of the solar corona, enabling investigations of dynamic phenomena associated with solar flares, coronal mass ejections (CMEs), and shock waves.
15. Mode-Specific Dynamics of CO2 Hydrogenation on Copper: The Hidden Role of Molecular Rotation
   Source: physics.chem-ph (Chemical Physics)
   Link: https://arxiv.org/abs/2608.27850
   Catalytic hydrogenation of CO2 to formate on copper is a key elementary step for CO2 utilization.

Sources in this brief: physics.acc-ph (Accelerator Physics); physics.chem-ph (Chemical Physics); physics.flu-dyn (Fluid Dynamics); physics.gen-ph (General Physics); physics.plasm-ph (Plasma Physics).
Selected 15 of 35 available items for this weekly brief.