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Beyond Electric-Dipole Treatment of Light-Matter Interactions in Materials: Nondipole Harmonic Generation in Bulk Si

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abstract

A beyond electric-dipole light-matter theory is needed to describe emerging X-ray and THz applications for characterization and control of quantum materials but inaccessible as nondipole lattice-aperiodic terms impede on the use of Bloch's theorem. To circumvent this, we derive a formalism that captures dominant nondipole effects in intense electromagnetic fields while conserving lattice translational symmetry. Our approach enables the first accurate nondipole first-principles microscopic simulation of nonperturbative harmonic generation in Si. We reveal nondipole-induced transverse currents generating perturbative even-ordered harmonics and display the onset of nondipole high harmonic generation near the laser damage threshold.

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cs.CV 1

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2025 1

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representative citing papers

Multimodal Referring Segmentation: A Survey

cs.CV · 2025-08-01 · unverdicted · novelty 4.0

The abstract describes a computer vision survey, while the body is an unrelated high-harmonic-generation physics manuscript, making the claimed survey unavailable for evaluation.

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  • Multimodal Referring Segmentation: A Survey cs.CV · 2025-08-01 · unverdicted · none · ref 32 · internal anchor

    The abstract describes a computer vision survey, while the body is an unrelated high-harmonic-generation physics manuscript, making the claimed survey unavailable for evaluation.