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Challenges in generating density perturbations from a fluctuating inflaton coupling

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Challenges in generating density perturbations from a fluctuating inflaton coupling. / Enqvist, Kari; Mazumdar, Anupam; Postma, Marieke.
In: Physical Review D, Vol. 67, No. 12, 121303, 26.06.2003.

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

Harvard

Enqvist, K, Mazumdar, A & Postma, M 2003, 'Challenges in generating density perturbations from a fluctuating inflaton coupling', Physical Review D, vol. 67, no. 12, 121303. https://doi.org/10.1103/PhysRevD.67.121303

APA

Enqvist, K., Mazumdar, A., & Postma, M. (2003). Challenges in generating density perturbations from a fluctuating inflaton coupling. Physical Review D, 67(12), Article 121303. https://doi.org/10.1103/PhysRevD.67.121303

Vancouver

Enqvist K, Mazumdar A, Postma M. Challenges in generating density perturbations from a fluctuating inflaton coupling. Physical Review D. 2003 Jun 26;67(12):121303. doi: 10.1103/PhysRevD.67.121303

Author

Enqvist, Kari ; Mazumdar, Anupam ; Postma, Marieke. / Challenges in generating density perturbations from a fluctuating inflaton coupling. In: Physical Review D. 2003 ; Vol. 67, No. 12.

Bibtex

@article{39ba510d896d4a03a6d41fbea67a1409,
title = "Challenges in generating density perturbations from a fluctuating inflaton coupling",
abstract = "We discuss the possibility of generating adiabatic density perturbations from spatial fluctuations in the inflaton decay rate which are due to quantum fluctuations of light moduli fields coupling to the inflaton. We point out that non-renormalizable operators, which lift the flatness of the moduli potential, play an important role for the density perturbations. In particular, the non-renormalizable terms give rise to a considerable damping of the fluctuations and thereby pose an obstruction to the construction of possible models.",
author = "Kari Enqvist and Anupam Mazumdar and Marieke Postma",
note = "{\textcopyright} 2003 The American Physical Society 3 pages",
year = "2003",
month = jun,
day = "26",
doi = "10.1103/PhysRevD.67.121303",
language = "English",
volume = "67",
journal = "Physical Review D",
issn = "1550-7998",
publisher = "American Physical Society",
number = "12",

}

RIS

TY - JOUR

T1 - Challenges in generating density perturbations from a fluctuating inflaton coupling

AU - Enqvist, Kari

AU - Mazumdar, Anupam

AU - Postma, Marieke

N1 - © 2003 The American Physical Society 3 pages

PY - 2003/6/26

Y1 - 2003/6/26

N2 - We discuss the possibility of generating adiabatic density perturbations from spatial fluctuations in the inflaton decay rate which are due to quantum fluctuations of light moduli fields coupling to the inflaton. We point out that non-renormalizable operators, which lift the flatness of the moduli potential, play an important role for the density perturbations. In particular, the non-renormalizable terms give rise to a considerable damping of the fluctuations and thereby pose an obstruction to the construction of possible models.

AB - We discuss the possibility of generating adiabatic density perturbations from spatial fluctuations in the inflaton decay rate which are due to quantum fluctuations of light moduli fields coupling to the inflaton. We point out that non-renormalizable operators, which lift the flatness of the moduli potential, play an important role for the density perturbations. In particular, the non-renormalizable terms give rise to a considerable damping of the fluctuations and thereby pose an obstruction to the construction of possible models.

U2 - 10.1103/PhysRevD.67.121303

DO - 10.1103/PhysRevD.67.121303

M3 - Journal article

VL - 67

JO - Physical Review D

JF - Physical Review D

SN - 1550-7998

IS - 12

M1 - 121303

ER -