Interactions of a Continuous-Spin Field with a Spin-1/2 Particle
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866912385133969408 |
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| author | Kundu, Shayarneel Russo, Alessandro Schuster, Philip Toro, Natalia |
| author_facet | Kundu, Shayarneel Russo, Alessandro Schuster, Philip Toro, Natalia |
| contents | We introduce a formalism for coupling a bosonic Continuous-Spin field to familiar spin-1/2 matter. To do this, we describe the matter using the supersymmetric worldline formalism. We construct currents that are local functions of worldline kinematics, and respect both the worldline supersymmetry and the conservation condition required for consistent couplings to Abelian CSP fields. As the spin Casimir $ρ$ of the CSP vanishes, the interactions reduce to that of familiar QED in one case, and to a Yukawa interaction with a spin-1/2 fermion in another case. Our formalism is applicable to computing deviations from QED if the photon is a CSP, thereby enabling a range of phenomenological studies. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_14770 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Interactions of a Continuous-Spin Field with a Spin-1/2 Particle Kundu, Shayarneel Russo, Alessandro Schuster, Philip Toro, Natalia High Energy Physics - Theory High Energy Physics - Phenomenology We introduce a formalism for coupling a bosonic Continuous-Spin field to familiar spin-1/2 matter. To do this, we describe the matter using the supersymmetric worldline formalism. We construct currents that are local functions of worldline kinematics, and respect both the worldline supersymmetry and the conservation condition required for consistent couplings to Abelian CSP fields. As the spin Casimir $ρ$ of the CSP vanishes, the interactions reduce to that of familiar QED in one case, and to a Yukawa interaction with a spin-1/2 fermion in another case. Our formalism is applicable to computing deviations from QED if the photon is a CSP, thereby enabling a range of phenomenological studies. |
| title | Interactions of a Continuous-Spin Field with a Spin-1/2 Particle |
| topic | High Energy Physics - Theory High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2505.14770 |