Vector curvaton without instabilities.

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Vector curvaton without instabilities. / Dimopoulos, Konstantinos; Karciauskas, Mindaugas; Wagstaff, Jacques M.
In: Physics Letters B, Vol. 683, No. 4-5, 25.01.2010, p. 298-301.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Dimopoulos, K, Karciauskas, M & Wagstaff, JM 2010, 'Vector curvaton without instabilities.', Physics Letters B, vol. 683, no. 4-5, pp. 298-301. https://doi.org/10.1016/j.physletb.2009.12.024

APA

Dimopoulos, K., Karciauskas, M., & Wagstaff, J. M. (2010). Vector curvaton without instabilities. Physics Letters B, 683(4-5), 298-301. https://doi.org/10.1016/j.physletb.2009.12.024

Vancouver

Dimopoulos K, Karciauskas M, Wagstaff JM. Vector curvaton without instabilities. Physics Letters B. 2010 Jan 25;683(4-5):298-301. doi: 10.1016/j.physletb.2009.12.024

Author

Dimopoulos, Konstantinos ; Karciauskas, Mindaugas ; Wagstaff, Jacques M. / Vector curvaton without instabilities. In: Physics Letters B. 2010 ; Vol. 683, No. 4-5. pp. 298-301.

Bibtex

@article{f4418fd7cd064defa5233d74723fa36f,

title = "Vector curvaton without instabilities.",

abstract = "A vector curvaton model with a Maxwell kinetic term and varying kinetic function and mass during inflation is studied. It is shown that, if light until the end of inflation, the vector field can generate statistical anisotropy in the curvature perturbation spectrum and bispectrum, with the latter being predominantly anisotropic. If by the end of inflation the vector field becomes heavy, then particle production is isotropic and the vector curvaton can alone generate the curvature perturbation. The model does not suffer from instabilities such as ghosts and is the only concrete model, to date, which can produce the curvature perturbation without direct involvement of fundamental scalar fields.",

keywords = "cosmology, cosmic inflation, curvature perturbations, vector fields",

author = "Konstantinos Dimopoulos and Mindaugas Karciauskas and Wagstaff, {Jacques M.}",

year = "2010",

month = jan,

day = "25",

doi = "10.1016/j.physletb.2009.12.024",

language = "English",

volume = "683",

pages = "298--301",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "ELSEVIER SCIENCE BV",

number = "4-5",

}

RIS

TY - JOUR

T1 - Vector curvaton without instabilities.

AU - Dimopoulos, Konstantinos

AU - Karciauskas, Mindaugas

AU - Wagstaff, Jacques M.

PY - 2010/1/25

Y1 - 2010/1/25

N2 - A vector curvaton model with a Maxwell kinetic term and varying kinetic function and mass during inflation is studied. It is shown that, if light until the end of inflation, the vector field can generate statistical anisotropy in the curvature perturbation spectrum and bispectrum, with the latter being predominantly anisotropic. If by the end of inflation the vector field becomes heavy, then particle production is isotropic and the vector curvaton can alone generate the curvature perturbation. The model does not suffer from instabilities such as ghosts and is the only concrete model, to date, which can produce the curvature perturbation without direct involvement of fundamental scalar fields.

AB - A vector curvaton model with a Maxwell kinetic term and varying kinetic function and mass during inflation is studied. It is shown that, if light until the end of inflation, the vector field can generate statistical anisotropy in the curvature perturbation spectrum and bispectrum, with the latter being predominantly anisotropic. If by the end of inflation the vector field becomes heavy, then particle production is isotropic and the vector curvaton can alone generate the curvature perturbation. The model does not suffer from instabilities such as ghosts and is the only concrete model, to date, which can produce the curvature perturbation without direct involvement of fundamental scalar fields.

KW - cosmology

KW - cosmic inflation

KW - curvature perturbations

KW - vector fields

UR - http://www.scopus.com/inward/record.url?scp=73649100265&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2009.12.024

DO - 10.1016/j.physletb.2009.12.024

M3 - Journal article

VL - 683

SP - 298

EP - 301

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

IS - 4-5

ER -

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