Hyperbolic DBI remains caustic-free for generic waves on planar domain walls in 2D flat space and under realistic deformations; only hyperbolicity loss produces cusp caustics.
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Quadratic WIMP-ALP coupling induces coherent freeze-out that allows WIMP annihilation cross sections up to 1000 times larger than standard while matching relic density, plus an ALP miracle where Planck-suppressed couplings naturally yield correct ALP dark matter abundance independent of initial mass
Collapsing Z_N domain walls trap baryons into dense baryoids, yielding a dark matter-baryon energy density ratio of approximately (N-1):1 after the QCD phase transition.
citing papers explorer
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Caustic formation in DBI models: Wave propagation on planar domain walls
Hyperbolic DBI remains caustic-free for generic waves on planar domain walls in 2D flat space and under realistic deformations; only hyperbolicity loss produces cusp caustics.
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WIMP Meets ALP: Coherent Freeze-Out of Dark Matter
Quadratic WIMP-ALP coupling induces coherent freeze-out that allows WIMP annihilation cross sections up to 1000 times larger than standard while matching relic density, plus an ALP miracle where Planck-suppressed couplings naturally yield correct ALP dark matter abundance independent of initial mass
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Baryoid Dark Matter from $\mathbb{Z}_N$ Domain Walls: The $(N-1):1$ origin of the dark matter-baryon coincidence
Collapsing Z_N domain walls trap baryons into dense baryoids, yielding a dark matter-baryon energy density ratio of approximately (N-1):1 after the QCD phase transition.