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Axion Landscape Cosmology

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arxiv 1810.02822 v1 pith:SZLNCJKE submitted 2018-10-05 hep-th

Thomas C. Bachlechner , Kate Eckerle , Oliver Janssen , Matthew Kleban This is my paper · ORCID
classification hep-th
keywords axioncandidatecosmologicalcosmologydarkinflationmatternatural
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We study the cosmology of complex multi-axion theories. With O(100) fields and GUT scale energies these theories contain a vast number of vacua, inflationary trajectories and a natural dark matter candidate. We demonstrate that the vacua are stable on cosmological timescales. In a single theory, both large- and small-field inflation are possible and yield a broad range of cosmological observables, and vacuum decay can be followed by a relatively large number (> 60) of efolds of inflation. Light axions stabilized by gravitational instantons may constitute a natural dark matter candidate that does not spoil an axion solution to the strong CP problem.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Axiverse Lampposts

    hep-ph 2026-02 conditional novelty 6.0 of 10

    In a hierarchical multi-axion theory with random couplings, axion field ranges shrink with 1/sqrt(N), generic axion–SM couplings are suppressed, but the QCD axion's coupling is unsuppressed.

  2. Vortices and rotating solitons in ultralight dark matter

    astro-ph.CO 2025-01 conditional novelty 6.0 of 10

    Rotating solitons in self-interacting ultralight dark matter form through a uniform vortex lattice, with a maximum radius about 1.59 times and a maximum rotation rate about 1.34 times the square root of the central density.

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