Conveners
Parallel session - Phenomenology II
- Chair: Andrew Eberhardt
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David Cyncynates13/11/2025, 14:00
Axiogenesis links the baryon asymmetry and dark matter abundance through the dynamics of the QCD axion, but its minimal form overproduces dark matter and can exacerbate the QCD axion quality problem. In this talk, I’ll show how these issues are naturally resolved in an axiverse framework, where the QCD axion arises from multiple interacting axions. This setup generates large axion velocities...
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Naoya Kitajima13/11/2025, 14:20
We show that axions can be produced from Abelian-Higgs cosmic strings due to the axion-gauge coupling. The strong magnetic field is confined in the string, and the electric field is induced around the moving string, allowing axion productions from the dynamics of cosmic strings. Our simulation on the string network shows multimodal axion emissions in the sense that axions are produced in both...
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Xiaolin Ma13/11/2025, 14:40
Quantum sensing with qubits has advanced fundamental physics searches,
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but higher dimensional systems offer untapped potential. We present a
universal qutrit framework that yields a sequence-independent fourfold
increase in quantum Fisher information and a twofold gain in sensitivity.
In ultralight axion dark matter searches, spin-1 NV-center qutrits can
enhance the axion-electron...