Thermal Inflation with a thermal waterfall scalar field coupled to a light spectator scalar field

Physics

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Theoretical Particle Cosmology

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1702.08855
Rights statement: © 2017 American Physical Society
Accepted author manuscript, 381 KB, PDF document
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https://doi.org/10.1103/PhysRevD.95.103503
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Keywords

COSMOLOGY, Cosmology of Theories beyond the SM, Curvature perturbation

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Thermal Inflation with a thermal waterfall scalar field coupled to a light spectator scalar field. / Dimopoulos, Konstantinos ; Lyth, David Hilary ; Rumsey, Arron.
In: Physical Review D, Vol. 95, No. 10, 103503, 11.05.2017.

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

Bibtex

@article{3774405c0f1e4946af0baa4b417b325e,

title = "Thermal Inflation with a thermal waterfall scalar field coupled to a light spectator scalar field",

abstract = "A new model of thermal inflation is introduced, in which the mass of the thermal waterfall field is dependent on a light spectator scalar field. Using the δN formalism, the {"}end of inflation{"} scenario is investigated in order to ascertain whether this model is able to produce the dominant contribution to the primordial curvature perturbation. A multitude of constrains are considered so as to explore the parameter space, with particular emphasis to key observational signatures. For natural values of the parameters, the model is found to yield a sharp prediction for the scalar spectral index and its running, well within the current observational bounds. ",

keywords = "COSMOLOGY, Cosmology of Theories beyond the SM, Curvature perturbation ",

author = "Konstantinos Dimopoulos and Lyth, {David Hilary} and Arron Rumsey",

note = "{\textcopyright} 2017 American Physical Society",

year = "2017",

month = may,

day = "11",

doi = "10.1103/PhysRevD.95.103503",

language = "English",

volume = "95",

journal = "Physical Review D",

issn = "1550-7998",

publisher = "American Physical Society",

number = "10",

}

RIS

TY - JOUR

T1 - Thermal Inflation with a thermal waterfall scalar field coupled to a light spectator scalar field

AU - Dimopoulos, Konstantinos

AU - Lyth, David Hilary

AU - Rumsey, Arron

PY - 2017/5/11

Y1 - 2017/5/11

N2 - A new model of thermal inflation is introduced, in which the mass of the thermal waterfall field is dependent on a light spectator scalar field. Using the δN formalism, the "end of inflation" scenario is investigated in order to ascertain whether this model is able to produce the dominant contribution to the primordial curvature perturbation. A multitude of constrains are considered so as to explore the parameter space, with particular emphasis to key observational signatures. For natural values of the parameters, the model is found to yield a sharp prediction for the scalar spectral index and its running, well within the current observational bounds.

AB - A new model of thermal inflation is introduced, in which the mass of the thermal waterfall field is dependent on a light spectator scalar field. Using the δN formalism, the "end of inflation" scenario is investigated in order to ascertain whether this model is able to produce the dominant contribution to the primordial curvature perturbation. A multitude of constrains are considered so as to explore the parameter space, with particular emphasis to key observational signatures. For natural values of the parameters, the model is found to yield a sharp prediction for the scalar spectral index and its running, well within the current observational bounds.

KW - COSMOLOGY

KW - Cosmology of Theories beyond the SM

KW - Curvature perturbation

U2 - 10.1103/PhysRevD.95.103503

DO - 10.1103/PhysRevD.95.103503

M3 - Journal article

VL - 95

JO - Physical Review D

JF - Physical Review D

SN - 1550-7998

IS - 10

M1 - 103503

ER -

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