Cosmological structure formation from soft topological defects.

Details Cosmological structure formation from soft topological defects. Cosmological structure formation from soft topological defects.

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989cnpph..19...25h&link_type=abstract

Comments Nucl. Part. Phys., Vol. 19, No. 1, p. 25-39

Mathematics

Logic

Cosmology: Inflationary Universe, Universe: Large-Scale Structure, Cosmology: Dark Matter, Cosmology: Cosmic Strings

Scientific paper

Some models have extremely low-mass pseudo-Goldstone bosons that can lead to vacuum phase transitions at late times, after the decoupling of the microwave background. This can generate structure formation at redshifts z ⪆ 10 on mass scales as large as M ≡ 1018Msun. Such low energy transitions can lead to large but phenomenologically acceptable density inhomogeneities in "soft topological defects" (e.g., domain walls) with minimal variations in the microwave anisotropy. This mechanism is independent of the existence of hot, cold, or baryonic dark matter. It is a novel alternative to both cosmic string and inflationary quantum fluctuations as the origin of structure in the universe.

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