Probing Virtual ALPs by Precision Phase Measurements: Time-Varying Magnetic Field Background

Abstract

We propose an experimental scheme for detecting the effects of off-shell axion-like particles (ALPs) through optical cavities. In this proposed experiment, linearly polarized photons are pumped into an optical cavity where an external time-dependent magnetic field is present. The magnetic field mediates an interaction between the cavity photons and ALPs giving rise to a modification in the phase of the cavity photons. The time-dependent nature of the external magnetic field prompts a novel amplification effect which significantly enhances this phase modification. A detection scheme is then proposed to identify such axion-induced phase shifts. We find that the phase modification is considerably sensitive to the photon-ALPs coupling constants $g_{a\gamma \gamma }$ for the range of ALPs mass $3.1\mu \text{eV}⩽m_a⩽44.4\mu \text{eV}$.

arXiv comment26 pages, 8 figures

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Cited by in corpus (3)

• Ultimate light-shining-through-a-wall experiments to establish QCD axions as the dominant form of dark matter
• Induced Circular Polarization on Photons Due to Interaction with Axion-Like Particles in Rotating Magnetic Field of Neutron Stars
• Inching toward the QCD Axions with Axion Magnetic Resonance in Helioscopes