Supercomputing Swinburne

Jun 6, 2023 | onlinelibrary.wiley.com | Ben McAllister |Paul Altin |Supercomputing Swinburne |Aaron Quiskamp

The typical axion–photon coupling is governed by the Lagrangian term L ⊃ − 1 4 g a γ γ a ( t ) F μ ν F ∼ μ ν $$\begin{equation} \mathcal {L} \supset -\frac{1}{4}g_{a\gamma \gamma }\, a(t) \, F^{\mu \nu } \widetilde{F}_{ \mu \nu }\, \end{equation}$$ (2)where F μ ν $F^{\mu \nu }$ and F ∼ μ ν $\widetilde{F}^{\mu \nu }$ are the electromagnetic field strength and its dual, and a ( t ) $a(t)$ is the oscillating axion field.