2018/12/31 by Min-Seok Seo, Min‐Seok Seo
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Bound state #Combinatorics #Conjecture #Cosmology and Gravitation Theories #De Sitter universe #Dirac (video compression format) #Entropy (arrow of time) #Geometry #Image warping #Inflation (cosmology) #Mathematical analysis #Mathematical physics #Mathematics #Physics #Quadratic equation #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Spacetime #Theoretical physics #Universe #Upper and lower bounds #astro-ph.CO #hep-ph #hep-th
paper · pdf · doi:10.1103/physrevd.99.106004
published as Phys. Rev. D 99, 106004 (2019) · 6 pages, no figure, version published in Phys. Rev. D
arxiv created 2019/05/07 · openalex publication_date 2019/05/07 · arxiv updated 2019/05/09 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the de Sitter (dS) swampland conjecture in the Dirac-Born-Infeld (DBI) inflation model. We obtain the dS swampland bound for the relativistic regime using Bousso's entropy bound argument and proper distance. It restricts mPl\ensuremath∇V/V by some positive constant depending on warping and the field range. In the specific case of the DBI model driven by the quadratic potential, the model-dependent backreaction argument is interpreted as a natural bound for the slow-roll parameter. This shows that quasi-dS spacetime in the DBI model is a result of tuning.