2006/09/30 by Ishwaree P. Neupane · 35 citations
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Brane #Brane cosmology #Compactification (mathematics) #Conifold #Cosmological constant #Cosmology #Cosmology and Gravitation Theories #Mathematical physics #Moduli #Particle physics theoretical and experimental studies #Physics #Pure mathematics #Quantum mechanics #Supergravity #Superstring theory #Supersymmetry #Theoretical physics #Warp drive #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevlett.98.061301
published in Physical Review Letters 98(6), 061301 (American Physical Society) · 4 revtex pages; clarifications and references added; version accepted for publication in PRL
arxiv created 2007/01/30 · openalex publication_date 2007/02/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We find a cosmological solution corresponding to the compactification of 10D supergravity on a warped conifold that easily circumvents the "no-go" theorem given for a warped or flux compactification, providing new perspectives for the study of supergravity or superstring theory in cosmological backgrounds. With fixed volume moduli of the internal space, the model can explain a physical Universe undergoing an accelerated expansion in the 4D Einstein frame, for a sufficiently long time. The solution found in the limit that the warp factor dependent on the radial coordinate y is extremized (giving a constant warping) is smooth and it supports a flat four-dimensional Friedmann-Robertson-Walker cosmology undergoing a period of accelerated expansion with slowly rolling or stabilized volume moduli.