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hep-th2026
Wormhole fragmentation and the axion Weak Gravity Conjecture
Puxin Lin, Gary Shiu
We derive the axion Weak Gravity Conjecture (aWGC) from the nonperturbative fragmentation of Euclidean wormholes into charged defects. Requiring fragmentation to lower the Euclidea…
astro-ph.CO2026
Bounding axion dark energy
Gary Shiu, Flavio Tonioni, Hung V. Tran
We study cosmological solutions of (pseudo)scalar theories with periodic potentials, in the presence of arbitrary cosmological fluids -- including a cosmological constant of either…