2007/08/31 by Gianluca Calcagni, Giuseppe Nardelli · 2 citations
Mathematics · Physics and Astronomy · #Black Holes and Theoretical Physics #Boundary (topology) #Boundary value problem #Cosmology and Gravitation Theories #Field (mathematics) #Mathematical analysis #Mathematical physics #Mathematics #Open string #Particle physics theoretical and experimental studies #Physics #Pure mathematics #Quantum mechanics #String (physics) #String field theory #String theory #Supersymmetry #Tachyon #Tachyon condensation #Theoretical physics #hep-th #math-ph #math.MP
paper · pdf · doi:10.1103/physrevd.78.126010
published as Phys.Rev.D78:126010,2008 · 21 pages, 4 figures; v3: shorter version, contents rearranged and simplified, spiky solution now discarded, novel interpretation of OSFT/BSFT relation; v4: published version
arxiv created 2008/12/30 · openalex publication_date 2008/12/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We construct rolling tachyon solutions of open and boundary string field theory (OSFT and BSFT, respectively), in the bosonic and supersymmetric (susy) case. The wildly oscillating solution of susy OSFT is recovered, together with a family of time-dependent BSFT solutions, for the bosonic and susy string. These are parametrized by an arbitrary constant r involved in solving the Green equation of the target fields. When r=0 we recover previous results in BSFT, whereas for r attaining the value predicted by OSFT it is shown that the bosonic OSFT solution is the derivative of the boundary one; in the supersymmetric case the relation between the two solutions is more complicated. This technical correspondence sheds some light on the nature of wild oscillations, which appear in both theories whenever r>0.