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| Hauptverfasser: | , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| Online-Zugang: | https://arxiv.org/abs/2510.21154 |
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| _version_ | 1866917412502241280 |
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| author | Ok, Furkan Bahrami, Amir Caloz, Christophe |
| author_facet | Ok, Furkan Bahrami, Amir Caloz, Christophe |
| contents | We show that space-time modulation of electromagnetic potentials enables Klein tunneling far below the static threshold. The derived kinematics reveal oblique transitions that can connect opposite-energy continua without requiring their overlap, yielding a velocity-tunable Klein gap where transmission vanishes within a finite velocity window and reemerges beyond. The associated reduction in energy thresholds -- by up to four orders of magnitude -- suggests the potential for experimental realization using flying-focus fronts and relativistic electron beams. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_21154 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Access to Klein Tunneling via Space-Time Modulation Ok, Furkan Bahrami, Amir Caloz, Christophe Quantum Physics High Energy Physics - Theory We show that space-time modulation of electromagnetic potentials enables Klein tunneling far below the static threshold. The derived kinematics reveal oblique transitions that can connect opposite-energy continua without requiring their overlap, yielding a velocity-tunable Klein gap where transmission vanishes within a finite velocity window and reemerges beyond. The associated reduction in energy thresholds -- by up to four orders of magnitude -- suggests the potential for experimental realization using flying-focus fronts and relativistic electron beams. |
| title | Access to Klein Tunneling via Space-Time Modulation |
| topic | Quantum Physics High Energy Physics - Theory |
| url | https://arxiv.org/abs/2510.21154 |