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Ultra-Light Scalar Fields and the Growth of Structure in the Universe

Abstract:
Ultra-light scalar fields, with masses of between m=10^{-33} eV and m=10^{-22} eV, can affect the growth of structure in the Universe. We identify the different regimes in the evolution of ultra-light scalar fields, how they affect the expansion rate of the universe and how they affect the growth rate of cosmological perturbations. We find a number of interesting effects, discuss how they might arise in realistic scenarios of the early universe and comment on how they might be observed.
Publication status:
Published

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Publisher copy:
10.1103/PhysRevD.82.103528

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Journal:
Phys.Rev.D More from this journal
Volume:
82
Issue:
10
Pages:
103528
Publication date:
2010-09-17
DOI:
EISSN:
1550-2368
ISSN:
1550-7998


Language:
English
Keywords:
Pubs id:
pubs:151434
UUID:
uuid:d1e00600-60cc-4a33-8f6a-f949a58e6c33
Local pid:
pubs:151434
Source identifiers:
151434
Deposit date:
2012-12-19

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