Theoretical physics study demonstrates cavity polarimetry designs for detecting sub-eV bosonic dark matter, highlighting expanded sensitivity through twin-polarimeter cross-correlation.
Key Points
To propose optical polarimetry configurations utilizing Fabry-Pérot cavities to detect low-mass (sub-eV) bosonic field dark matter, including scalar fields and axionlike particles.
Modeled a polarimetry apparatus containing a thick birefringent solid inside a Fabry-Pérot cavity to detect scalar dark matter-induced oscillations in material thickness and refractive index.
Designed an alternative cavity configuration containing two quarter-wave plates optimized for detecting axionlike particles.
Analyzed signal sensitivity enhancements achievable through cross-correlation methods across twin polarimeter setups.
Demonstrated high theoretical sensitivity of the birefringent-solid cavity design to scalar field-induced variations in optical properties.
Showed that placing two quarter-wave plates inside the Fabry-Pérot cavity provides robust detection capability for axionlike particles.
Determined that twin-polarimeter cross-correlation enables the exploration of previously unprobed dark matter parameter space.