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Retrieving "Axion Like Particles" from the archives

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  1. Goldstone Bosons

    Linked via "Axion-like particles"

    | Symmetry Group Broken | Resulting Goldstone Modes ($N_G$) | Common Physical Context |
    | :--- | :--- | :--- |
    | $U(1)$ Global Symmetry | 1 | Axion-like particles, chiral symmetry breaking in low-energy QCD/). |
    | $SU(2)$ Global Symmetry | 3 | Pions ($\pi^\pm, \pi^0$) in the context of spontaneous chiral symmetry breaking. |
    | $O(N)$ Global Symmetry | $N-1$ | …