One-loop corrections to scalar and tensor perturbations during inflation in stochastic gravity

Yuko Urakawa, Keiichi Maeda

    Research output: Contribution to journalArticle

    45 Citations (Scopus)

    Abstract

    Based on the stochastic gravity, we study the loop corrections to the scalar and tensor perturbations during inflation. Since the loop corrections to scalar perturbations suffer infrared divergence, we consider the IR regularization to obtain the finite value. We find that the loop corrections to the scalar perturbations are amplified by the e-folding; in other words there appears the logarithmic correction, just as discussed by M. Sloth et al. On the other hand, we find that the tensor perturbations do not suffer from infrared divergence.

    Original languageEnglish
    Article number064004
    JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
    Volume78
    Issue number6
    DOIs
    Publication statusPublished - 2008 Sep 2

    Fingerprint

    Inflation
    Gravity
    Tensor
    Scalar
    tensors
    gravitation
    scalars
    Perturbation
    perturbation
    Divergence
    divergence
    Infrared
    Folding
    folding
    Regularization
    Logarithmic

    ASJC Scopus subject areas

    • Physics and Astronomy(all)
    • Nuclear and High Energy Physics
    • Mathematical Physics

    Cite this

    @article{3ac014582c2a4b1bbe64180263bf4d89,
    title = "One-loop corrections to scalar and tensor perturbations during inflation in stochastic gravity",
    abstract = "Based on the stochastic gravity, we study the loop corrections to the scalar and tensor perturbations during inflation. Since the loop corrections to scalar perturbations suffer infrared divergence, we consider the IR regularization to obtain the finite value. We find that the loop corrections to the scalar perturbations are amplified by the e-folding; in other words there appears the logarithmic correction, just as discussed by M. Sloth et al. On the other hand, we find that the tensor perturbations do not suffer from infrared divergence.",
    author = "Yuko Urakawa and Keiichi Maeda",
    year = "2008",
    month = "9",
    day = "2",
    doi = "10.1103/PhysRevD.78.064004",
    language = "English",
    volume = "78",
    journal = "Physical review D: Particles and fields",
    issn = "0556-2821",
    publisher = "American Institute of Physics Publising LLC",
    number = "6",

    }

    TY - JOUR

    T1 - One-loop corrections to scalar and tensor perturbations during inflation in stochastic gravity

    AU - Urakawa, Yuko

    AU - Maeda, Keiichi

    PY - 2008/9/2

    Y1 - 2008/9/2

    N2 - Based on the stochastic gravity, we study the loop corrections to the scalar and tensor perturbations during inflation. Since the loop corrections to scalar perturbations suffer infrared divergence, we consider the IR regularization to obtain the finite value. We find that the loop corrections to the scalar perturbations are amplified by the e-folding; in other words there appears the logarithmic correction, just as discussed by M. Sloth et al. On the other hand, we find that the tensor perturbations do not suffer from infrared divergence.

    AB - Based on the stochastic gravity, we study the loop corrections to the scalar and tensor perturbations during inflation. Since the loop corrections to scalar perturbations suffer infrared divergence, we consider the IR regularization to obtain the finite value. We find that the loop corrections to the scalar perturbations are amplified by the e-folding; in other words there appears the logarithmic correction, just as discussed by M. Sloth et al. On the other hand, we find that the tensor perturbations do not suffer from infrared divergence.

    UR - http://www.scopus.com/inward/record.url?scp=51649099977&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=51649099977&partnerID=8YFLogxK

    U2 - 10.1103/PhysRevD.78.064004

    DO - 10.1103/PhysRevD.78.064004

    M3 - Article

    VL - 78

    JO - Physical review D: Particles and fields

    JF - Physical review D: Particles and fields

    SN - 0556-2821

    IS - 6

    M1 - 064004

    ER -