Inflation in supersymmetric cosmic string theories

Davis, A.C.; Majumdar, Mahbub

doi:10.1016/s0370-2693(99)00801-1

Cited by 8 publications

(9 citation statements)

References 16 publications

(41 reference statements)

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“…Then, Refs. [344,345] studied more complicated models in the supersymmetric context in order to fix the problem we have just discussed. Other scenarios were also investigated in Refs.…”

Section: Theoretical Justificationsmentioning

confidence: 99%

Encyclopaedia Inflationaris

Martin¹,

Ringeval²,

Vennin³

2013

Preprint

243

479

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The current flow of high accuracy astrophysical data, among which are the Cosmic Microwave Background (CMB) measurements by the Planck satellite, offers an unprecedented opportunity to constrain the inflationary theory. This is however a challenging project given the size of the inflationary landscape which contains hundreds of different scenarios. Given that there is currently no observational evidence for primordial non-Gaussianities, isocurvature perturbations or any other non-minimal extension of the inflationary paradigm, a reasonable approach is to consider the simplest models first, namely the slow-roll single field models with minimal kinetic terms. This still leaves us with a very populated landscape, the exploration of which requires new and efficient strategies. It has been customary to tackle this problem by means of approximate model independent methods while a more ambitious alternative is to study the inflationary scenarios one by one. We have developed the new publicly available runtime library ASPIC 1 to implement this last approach. The ASPIC code provides all routines needed to quickly derive reheating consistent observable predictions within this class of scenarios. ASPIC has been designed as an evolutive code which presently supports 74 different models, a number that may be compared with three or four representing the present state of the art. In this paper, for each of the ASPIC models, we present and collect new results in a systematic manner, thereby constituting the first Encyclopaedia Inflationaris. Finally, we discuss how this procedure and ASPIC could be used to determine the best model of inflation by means of Bayesian inference.

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“…Then, Refs. [344,345] studied more complicated models in the supersymmetric context in order to fix the problem we have just discussed. Other scenarios were also investigated in Refs.…”

Section: Theoretical Justificationsmentioning

confidence: 99%

Encyclopaedia Inflationaris

Martin¹,

Ringeval²,

Vennin³

2013

Preprint

243

479

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show abstract

“…in Refs. [77,31,85] and others. A similar analysis, but with cosmic string and with an older CMB dataset, can be found in [26].…”

Section: Mixed Modelsmentioning

confidence: 99%

Cosmic structure formation with topological defects

2002

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“…where the sum extends over all helicity states i, with fermion number F i and mass squared m 2 i ; Λ stands for a renormalisation scale. Thus, the effective potential reads [28,29,30,31,32]…”

Section: F-term Inflationmentioning

confidence: 99%

Constraints on supersymmetric grand unified theories from cosmology

Rocher¹,

Sakellariadou²

2005

J. Cosmol. Astropart. Phys.

172

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Abstract. Within the context of SUSY GUTs, cosmic strings are generically formed at the end of hybrid inflation. However, the WMAP CMB measurements strongly constrain the possible cosmic strings contribution to the angular power spectrum of anisotropies. We investigate the parameter space of SUSY hybrid (Fand D-term) inflation, to get the conditions under which theoretical predictions are in agreement with data. The predictions of F-term inflation are in agreement with data, only if the superpotential coupling κ is small. In particular, for SUSY SO(10), the upper bound is κ < ∼ 7 × 10 −7 . This fine tuning problem can be lifted if we employ the curvaton mechanism, in which case κ < ∼ 8 × 10 −3 ; higher values are not allowed by the gravitino constraint. The constraint on κ is equivalent to a constraint on the SSB mass scale M , namely M < ∼ 2 × 10 15 GeV. The study of D-term inflation shows that the inflaton field is of the order of the Planck scale; one should therefore consider SUGRA. We find that the cosmic strings contribution to the CMB anisotropies is not constant, but it is strongly dependent on the gauge coupling g and on the superpotential coupling λ. We obtain g < ∼ 2 × 10 −2 and λ < ∼ 3 × 10 −5 . SUGRA corrections induce also a lower limit for λ. Equivalently, the Fayet-Iliopoulos term ξ must satisfy ξ < ∼ 2 × 10 15 GeV. This constraint holds for all allowed values of g.

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Inflation in supersymmetric cosmic string theories

Cited by 8 publications

References 16 publications

Encyclopaedia Inflationaris

Encyclopaedia Inflationaris

Cosmic structure formation with topological defects

Constraints on supersymmetric grand unified theories from cosmology

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