physics.optics · 2026-08-12 · No. 82

Optics, 2026-08-12.

1 new papers in physics.optics. Titles, authors, abstracts. Links to arXiv. Want this in your inbox every morning? Subscribe →

01 — The papers

1 entries
  1. 01

    Causality Sum Rules in Conventional Scattering Matrices

    Ning Han, Rui Zhao, Shuxing Yang, Mingzhu Li, Hongsheng Chen, Yihao Yang

    physics.optics · cs.AI

    Scattering matrices are the standard experimental and computational description of photonic and electromagnetic devices. Passivity is explicit in the conventional incoming-outgoing matrix, whereas causality sum rules are usually formulated only after transforming the response into auxiliary variables. Here we show that these rules can be written directly in the conventional scattering matrix by removing the time advance introduced by the...

    arxiv.org/abs/2608.10427 · PDF

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