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연구기관
초기우주과학기술연구소
Journal papers
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Large scale suppression of scalar power on a spatial condensation
Title
Large scale suppression of scalar power on a spatial condensation
Authors
Kouwn S.
;
Kwon O.-K.
;
Oh P.
Ewha Authors
권오갑
SCOPUS Author ID
권오갑
Issue Date
2015
Journal Title
Physical Review D - Particles, Fields, Gravitation and Cosmology
ISSN
1550-7998
Citation
Physical Review D - Particles, Fields, Gravitation and Cosmology vol. 91, no. 6
Publisher
American Physical Society
Indexed
SCI; SCIE; SCOPUS
Document Type
Article
Abstract
We consider a deformed single-field inflation model in terms of three SO(3) symmetric moduli fields. We find that spatially linear solutions for the moduli fields induce a phase transition during the early stage of the inflation and the suppression of scalar power spectrum at large scales. This suppression can be an origin of anomalies for large-scale perturbation modes in the cosmological observation. © 2015 American Physical Society.
DOI
10.1103/PhysRevD.91.063521
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