Observational constraints on cosmic string production during brane inflation

2003/04/30 by Levon Pogosian, S.-H. Henry Tye, S. -H. Henry Tye +2 · 213 citations
Physics and Astronomy · #Anisotropy #Astrophysics #Black Holes and Theoretical Physics #Brane #CMB cold spot #COSMIC cancer database #Cosmic background radiation #Cosmic microwave background #Cosmic string #Cosmology and Gravitation Theories #Extra dimensions #Galaxies: Formation, Evolution, Phenomena #Galaxy #Inflation (cosmology) #Inflaton #Observational cosmology #Particle physics #Physics #Planck #Quantum mechanics #Redshift #Scalar (mathematics) #String (physics) #Theoretical physics #astro-ph #gr-qc #hep-ph #hep-th

paper · pdf · doi:10.1103/physrevd.68.023506

published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 68(2) (American Physical Society) · 16 pages, 4 figures. A few errors in the computer code used to calculated CMB anistotropy from strings are fixed, resulting in a somewhat tighter bound on Gμand an enhanced B-mode polarization. Details of the corrected errors and their implications can be found in astro-ph/0604141

openalex publication_date 2003/07/03 · arxiv created 2006/04/06 · arxiv updated 2014/11/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

Overall, brane inflation is compatible with the recent analysis of the Wilkinson microwave anisotropy probe (WMAP) data. Here we explore the constraints of WMAP and the 2dF Galaxy Redshift Survey (2dFGRS) data on the various brane inflationary scenarios. Brane inflation naturally ends with the production of cosmic strings, which may provide a way to distinguish these models observationally. We argue that currently available data cannot exclude a non-negligible contribution from cosmic strings definitively. We perform a partial statistical analysis of mixed models that include a subdominant contribution from cosmic strings. Although the data favor models without cosmic strings, we conclude that they cannot definitively rule out a cosmic-string-induced contribution of \ensuremath∼10% to the observed temperature, polarization and galaxy density fluctuations. These results imply that G\ensuremathμ\ensuremath\lesssim1.3\ifmmode×\else\texttimes\fi10^\ensuremath-6√B\ensuremathλ/0.1, where \ensuremathλ<~1 is a measure of the intercommutation probability of the cosmic string networks and B measures the importance of perturbations induced by cosmic strings. We argue that, conservatively, the data available currently still permit B\ensuremath\lesssim0.1. Precision measurements sensitive to the B-mode polarization produced by vector density perturbation modes driven by the string network could provide evidence for these models. Accurate determinations of n_s(k), the scalar fluctuation index, could also distinguish among various brane inflation models.

Citations

• Cosmic Microwave Background and Density Fluctuations from Strings plus Inflation
• A new inflationary universe scenario: A possible solution of the horizon, flatness, homogeneity, isotropy and primordial monopole problems
• Recombination of Intersecting D-Branes and Cosmological Inflation
• Limit on the Detectability of the Energy Scale of Inflation
• Cosmic microwave background bispectrum from active models of structure formation
• The 2dF Galaxy Redshift Survey: the power spectrum and the matter content of the Universe
• The Case against Scaling Defect Models of Cosmic Structure Formation
• Cosmology for Grand Unified Theories with Radiatively Induced Symmetry Breaking
• Polarization of the Microwave Background in Defect Models
• Detailed study of defect models for cosmic structure formation
• Scalar, vector, and tensor contributions to CMB anisotropies from cosmic defects
• SO(32) spinors of type I and other solitons on brane-antibrane pair
• Extending the velocity-dependent one-scale string evolution model
• Brane inflation

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• Towards inflation in string theory
• Signature of cosmic string wakes in the CMB polarization
• Cosmic superstrings in large volume compactifications: PTAs, LISA and time-varying tension
• WMAP constraints on inflationary models with global defects
• Observing cosmic string loops with gravitational lensing surveys
• Effect of component separation on the temperature distribution of the cosmic microwave background
• Running of the running of the spectral index and WMAP three-year data
• Bounds on cosmic strings from WMAP and SDSS
• Scaling of multitension cosmic superstring networks
• A note on the evolution of cosmic string/superstring networks
• Seeking string theory in the cosmos
• Super hilltop inflation
• CMB anisotropies from primordial inhomogeneous magnetic fields
• Bianchi—V string cosmological model and late time acceleration
• Note on structure formation from cosmic string wakes
• Cosmic string in the BTZ black hole background with time-dependent tension
• The 21 cm signature of shock heated and diffuse cosmic string wakes
• Old Inflation in String Theory
• Brane necklaces and brane coils
• Inflation from warped space
• Analytical model for CMB temperature angular power spectrum from cosmic (super-)strings
• The Validity of the Cosmic String Pattern Search with the Cosmic Microwave Background
• STRING COSMOLOGY IN ANISOTROPIC BIANCHI-II SPACETIME
• CANNY ALGORITHM, COSMIC STRINGS AND THE COSMIC MICROWAVE BACKGROUND
• Implications of cosmic strings with time-varying tension on the CMB and large scale structure
• Quantum effects in gravitational wave signals from cuspy superstrings
• Edge detection, cosmic strings and the south pole telescope
• Quasar variability limits on cosmological density of cosmic strings
• Non-Gaussianity in KKLMMT model
• Physical cosmology [wikipedia]