Home > Research > Publications & Outputs > Supergravity and two-field inflation effects in...

Associated organisational unit

Electronic data

  • 0710.4273v3.pdf

    675 KB, PDF document

  • E063529

    Rights statement: © 2008 The American Physical Society

    Final published version, 804 KB, PDF document

Links

Text available via DOI:

View graph of relations

Supergravity and two-field inflation effects in right-handed sneutrino modified D-term inflation.

Research output: Contribution to journalJournal article

Published

Standard

Supergravity and two-field inflation effects in right-handed sneutrino modified D-term inflation. / Lin, Chia-Min; McDonald, John.

In: Physical Review D, Vol. 77, No. 6, 063529, 25.03.2008.

Research output: Contribution to journalJournal article

Harvard

APA

Vancouver

Author

Bibtex

@article{18e3c7ee377d48959d1b24a55c9b2a59,
title = "Supergravity and two-field inflation effects in right-handed sneutrino modified D-term inflation.",
abstract = "We extend previous work on the minimal D-term inflation model modified by right-handed (RH) sneutrino fields to include additional inflaton-sector supergravity corrections and two-field inflation effects. We show that supergravity corrections simultaneously allow ns to be within 3-year Wilkinson Microwave Anisotropy Probe limits and the cosmic string contribution to the cosmic microwave background (CMB) power spectrum to be less than 5%. For gauge coupling g<=1, the CMB contribution from cosmic strings is predicted to be at least 1% while the spectral index is predicted to be less than 0.968 for a CMB string contribution less than 5%. Treating the inflaton-RH sneutrino system as a two-field inflation model, we show that the time-dependence of the RH sneutrino field strongly modifies the single-field results for values of RH sneutrino mass mPhi>0.1H. The running spectral index is alpha[approximate]-0.0002 when mPhi<0.1H but increases to positive values as mPhi/H increases, with alpha>0.008 for mPhi>1.0H.",
author = "Chia-Min Lin and John McDonald",
note = "{\textcopyright}2008 The American Physical Society",
year = "2008",
month = mar,
day = "25",
doi = "10.1103/PhysRevD.77.063529",
language = "English",
volume = "77",
journal = "Physical Review D",
issn = "1550-7998",
publisher = "American Physical Society",
number = "6",

}

RIS

TY - JOUR

T1 - Supergravity and two-field inflation effects in right-handed sneutrino modified D-term inflation.

AU - Lin, Chia-Min

AU - McDonald, John

N1 - ©2008 The American Physical Society

PY - 2008/3/25

Y1 - 2008/3/25

N2 - We extend previous work on the minimal D-term inflation model modified by right-handed (RH) sneutrino fields to include additional inflaton-sector supergravity corrections and two-field inflation effects. We show that supergravity corrections simultaneously allow ns to be within 3-year Wilkinson Microwave Anisotropy Probe limits and the cosmic string contribution to the cosmic microwave background (CMB) power spectrum to be less than 5%. For gauge coupling g<=1, the CMB contribution from cosmic strings is predicted to be at least 1% while the spectral index is predicted to be less than 0.968 for a CMB string contribution less than 5%. Treating the inflaton-RH sneutrino system as a two-field inflation model, we show that the time-dependence of the RH sneutrino field strongly modifies the single-field results for values of RH sneutrino mass mPhi>0.1H. The running spectral index is alpha[approximate]-0.0002 when mPhi<0.1H but increases to positive values as mPhi/H increases, with alpha>0.008 for mPhi>1.0H.

AB - We extend previous work on the minimal D-term inflation model modified by right-handed (RH) sneutrino fields to include additional inflaton-sector supergravity corrections and two-field inflation effects. We show that supergravity corrections simultaneously allow ns to be within 3-year Wilkinson Microwave Anisotropy Probe limits and the cosmic string contribution to the cosmic microwave background (CMB) power spectrum to be less than 5%. For gauge coupling g<=1, the CMB contribution from cosmic strings is predicted to be at least 1% while the spectral index is predicted to be less than 0.968 for a CMB string contribution less than 5%. Treating the inflaton-RH sneutrino system as a two-field inflation model, we show that the time-dependence of the RH sneutrino field strongly modifies the single-field results for values of RH sneutrino mass mPhi>0.1H. The running spectral index is alpha[approximate]-0.0002 when mPhi<0.1H but increases to positive values as mPhi/H increases, with alpha>0.008 for mPhi>1.0H.

U2 - 10.1103/PhysRevD.77.063529

DO - 10.1103/PhysRevD.77.063529

M3 - Journal article

VL - 77

JO - Physical Review D

JF - Physical Review D

SN - 1550-7998

IS - 6

M1 - 063529

ER -