2005/04/30 by I. Ya. Aref'eva, Iirina Ya Aref'eva, Liudmila V Joukovskaya +1 · 80 citations
Mathematics · Physics and Astronomy · #Advanced Mathematical Physics Problems #Black Holes and Theoretical Physics #Brane #Classical mechanics #Cosmology and Gravitation Theories #Economics #Field (mathematics) #Mathematics #Order (exchange) #Physics #Pure mathematics #Quantum mechanics #Statistical physics #String (physics) #String theory #Theoretical physics #Work (physics) #hep-th
paper · pdf · doi:10.1088/1126-6708/2005/10/087
published in Journal of High Energy Physics 2005(10), 087 (Springer Nature) · Latex, 24 pages, 13 figures, Typos corrected, references added
arxiv created 2005/08/26 · openalex publication_date 2005/10/27 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study lump solutions in nonlocal toy models and their cosmological applications. These models are motivated by a description of D-brane decay within string field theory framework. In order to find cosmological solutions we use the simplest local approximation keeping only second derivative terms in nonlocal dynamics. We study a validity of this approximation in flat background where time lump solutions can be written explicitly. We work out the validity of this approximation. We show that our models at large time exhibit the phantom behaviour similar to the case of the string kink.