2026-10-21 · arXiv Quantum Physics
arXiv:2610.28144v1 Announce Type: cross
Abstract: We investigate photon-to-axion-like-particle (ALP) conversion in a finite, linearly polarized laser pulse for a single ALP field with simultaneous scalar-type and pseudoscalar-type couplings to photons. Varying the collision angle between the strong pulse and the probe provides a continuous kinematic scan of the resonant ALP mass. For fixed kinematics in this setting, the scalar-type and pseudoscalar-type ALP conversion amplitudes interfere coherently, making both the photon-to-ALP conversion probability and the polarization rotation depend on the difference between the probe polarization angle $\alpha$ and the coupling angle $\theta_g$. Conversion is maximal at $|\alpha-\theta_g|=90^\circ$, where the polarization rotation vanishes, while the rotation magnitude peaks at $\alpha-\theta_g=45^\circ$ modulo $90^\circ$, where conversion is half-maximal. These complementary polarization-angle dependences provide polarization-resolved signatures of mixed scalar--pseudoscalar photon couplings.
原文链接：https://arxiv.org/abs/2610.28144
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