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Growth of Cosmic Strings beyond Kination

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arxiv 2503.11293 v1 pith:DTP22C7G submitted 2025-03-14 hep-th astro-ph.COgr-qchep-ph

Luca Brunelli , Michele Cicoli , Francisco G. Pedro This is my paper
classification hep-thastro-ph.COgr-qchep-ph
keywords stringsgrowthfundamentalanalysiscosmiccosmologicalcyclesfixed
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abstract

A novel mechanism for the production of a cosmic network of fundamental superstrings based on a time-varying string tension has been recently proposed in the context of a kinating background driven by the volume modulus of string compactifications. In this paper, we generalise the analysis of this growth mechanism by using dynamical system techniques. We first study the cosmological growth of strings in a spatially-flat Universe filled with a perfect fluid and a field-dependent tension, finding the fixed points of the phase space of this system. We then apply this analysis to fundamental strings and EFT strings obtained from wrapping $p$-branes on $(p-1)$-cycles. We find a cosmological growth for fundamental strings even without kination, as in scaling fixed points, and for EFT strings arising from D3- and NS5-branes wrapped around fibration cycles.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Self-Tracking Solutions for Asymptotic Scalar Fields

    hep-th 2025-07 conditional novelty 7.0 of 10

    The self-perturbations of a scalar field on an exponential potential can act as an effective radiation background, producing a self-tracking solution with the familiar radiation tracker fixed point.

  2. Gravitational Waves from Multiple Cosmic Superstrings and the Overshoot Problem

    hep-th 2026-07 conditional novelty 6.0 of 10

    A string-theory model with three cosmic superstring species solves the modulus overshoot problem via gravitational-wave friction and predicts a high-frequency multi-peaked stochastic gravitational-wave spectrum.

  3. Fibre Inflation Meets Quintessence: Implications of Perturbative Stabilisation

    hep-th 2025-11 reject novelty 5.0 of 10

    Adding a base-modulus redefinition to fibre inflation in perturbative LVS shifts (ns, r) into ACT-allowed territory and yields an axion quintessence companion.

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