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PreprintCC BY-NC-ND 4.0arXiv

Cherenkov Bursts are Memory Steps

  • Jann Zosso
  • Guangzi Xu
  • Vitor Cardoso
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Abstract

We show that the familiar Cherenkov burst from a finite superluminal charge track can be understood as a pair of interfering electromagnetic memory transitions. Endpoint accelerations of the track produce opposite memory steps in the transverse vector potential, such that the corresponding finite-frequency radiation is universally fixed, below the endpoint-acceleration-scale, by the memory amplitude and the time for which the temporary memory offset persists. As the Cherenkov direction is approached, the memory amplitudes grow while their separation in observer time shrinks, until the two vector-potential steps overlap and their divergent contributions cancel into a finite Cherenkov burst. This perspective opens the door to using the Askaryan effect as a setting in which individual macroscopic memory transitions may be resolved, providing a new experimental arena for memory-linked infrared physics.

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Cite

BibTeXRIS
BibTeX
@misc{zosso2026cherenkov,
  title = {{Cherenkov Bursts are Memory Steps}},
  author = {Jann Zosso and Guangzi Xu and Vitor Cardoso},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.06528},
  eprint = {2610.06528},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.06528},
  note = {CC BY-NC-ND 4.0},
}
RIS
TY  - UNPB
TI  - Cherenkov Bursts are Memory Steps
AU  - Jann Zosso
AU  - Guangzi Xu
AU  - Vitor Cardoso
PY  - 2026
DA  - 2026/10/05
PB  - arXiv
DO  - 10.48550/arxiv.2610.06528
UR  - https://arxiv.org/abs/2610.06528
AB  - We show that the familiar Cherenkov burst from a finite superluminal charge track can be understood as a pair of interfering electromagnetic memory transitions. Endpoint accelerations of the track produce opposite memory steps in the transverse vector potential, such that the corresponding finite-frequency radiation is universally fixed, below the endpoint-acceleration-scale, by the memory amplitude and the time for which the temporary memory offset persists. As the Cherenkov direction is approached, the memory amplitudes grow while their separation in observer time shrinks, until the two vector-potential steps overlap and their divergent contributions cancel into a finite Cherenkov burst. This perspective opens the door to using the Askaryan effect as a setting in which individual macroscopic memory transitions may be resolved, providing a new experimental arena for memory-linked infrared physics.
ER  -