This article introduces a systematic framework to understand (not to derive yet) the all-loop 4-particle amplituhedron in planar N=4 SYM, utilizing both positivity and the Mondrian diagrammatics. Its ...

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“Loop-the-Loop: Feynman Calculus and its Applications to Gravity and Particle Physics” returns for its second edition as a fully online workshop, 10–12 November 2025. The event aims to spark in-depth ...

The ATLAS Collaboration observed photons elastically scattering from other photons — an effect predicted by quantum electrodynamics over 80 years ago. Because the coupling at each photon–charged ...

Astronomers have found a vast loop-like structure, 20 light years across, adjacent to the most massive star-forming region known in our galaxy. The loop, which was observed in X-ray wavelengths, is 15 ...

Abstract: The pull-in process is a mechanism where phaselocked loop acquires lock state. It is known as the highest range of frequency where the phase locked loop (PLL) has a separatrix cycle. No ...

GATE/Geant4 enters an infinite loop when using the emstandard_opt4 physics list for voxelized phantoms. An infinite number of steps with step length 0 and dE 0 is produced (see tracking output below).

You can think of a neural network as a complex function that accepts some numeric inputs and that generates some numeric outputs. A neural network has weights and bias values that, along with the ...

Although mathematically elegant, back-propagation isn't perfect. Instead consider using particle swarm optimization (PSO) to train your neural network; here's how. You can think of a neural network as ...