Dual spacetime and nonsingular string cosmology

2018/05/15 by Robert Brandenberger, Renato Costa, Guilherme Franzmann +1 · 2 citations
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Classical mechanics #Cosmology #Cosmology and Gravitation Theories #Duality (order theory) #Geometry #Gravitational singularity #Mathematical physics #Mathematics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Singularity #Spacetime #String (physics) #String theory #Superstring theory #Supersymmetry #Theoretical physics #Universe #astro-ph.CO #gr-qc #hep-th

paper · pdf · doi:10.1103/physrevd.98.063521

published as Phys. Rev. D 98, 063521 (2018) · 7 pages, 3 figures. arXiv admin note: text overlap with arXiv:1710.02412

arxiv created 2018/05/15 · openalex publication_date 2018/09/18 · arxiv updated 2018/09/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Making use of the T-duality symmetry of superstring theory and of the double geometry from double field theory, we argue that cosmological singularities of a homogeneous and isotropic universe disappear. In fact, an apparent big bang singularity in Einstein gravity corresponds to a universe expanding to infinite size in the dual dimensions.

Citations

• Point Particle Motion in DFT and a Singularity-Free Cosmological Solution
• STRING GAS COSMOLOGY AND STRUCTURE FORMATION
• The singularities of gravitational collapse and cosmology
• Superstrings in the early universe
• String gas cosmology
• The pre-big bang scenario in string cosmology
• Superspace duality in low-energy superstrings
• Running of the spectrum of cosmological perturbations in string gas cosmology
• Planck 2015 results
• Planck 2015 results. XX. Constraints on inflation

Cited by

• String hole gas in α'-corrected dilaton gravity
• Inflation in string field theory