Nonlocal instantons and solitons in string models

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dc.creatorCalcagni, Gianluca
dc.creatorNardelli, Giuseppe
dc.date2008-02-29
dc.date2008-10-02
dc.date.accessioned2026-07-07T12:40:09Z
dc.date.available2026-07-07T12:40:09Z
dc.descriptionWe study a class of nonlocal systems which can be described by a local scalar field diffusing in an auxiliary radial dimension. As examples p-adic, open and boundary string field theory are considered on Minkowski, Friedmann-Robertson-Walker and Euclidean metric backgrounds. Starting from distribution-like initial field configurations which are constant almost everywhere, we construct exact and approximate nonlocal solutions. The Euclidean p-adic lump is interpreted as a solitonic brane, and the Euclidean kink of supersymmetric open string field theory as an instanton. Some relations between solutions of different string theories are highlighted also thanks to a reformulation of nonlocal systems as fixed points in a renormalization group flow.
dc.description12 pages
dc.identifierhttps://arxiv.org/abs/0802.4395
dc.identifierhttp://arxiv.org/abs/0802.4395
dc.identifierPhys.Lett.B669:102-112,2008
dc.identifierdoi:10.1016/j.physletb.2008.09.016
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/219358
dc.subjectHigh Energy Physics - Theory
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectMathematical Physics
dc.titleNonlocal instantons and solitons in string models
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