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Nucleus from String Theory

By Koji Hashimoto and Takeshi Morita

Abstract

In generic holographic QCD, we find that baryons are bound to form a nucleus, and that its radius obeys the empirically-known mass number (A) dependence r A^{1/3} for large A. Our result is robust, since we use only a generic property of D-brane actions in string theory. We also show that nucleons are bound completely in a finite volume. Furthermore, employing a concrete holographic model (derived by Hashimoto, Iizuka, and Yi, describing a multi-baryon system in the Sakai-Sugimoto model), the nuclear radius is evaluated as O(1) x A^{1/3} [fm], which is consistent with experiments.Comment: 4 pages; Ver.2: terminology on nuclear density saturation modified, a reference adde

Topics: High Energy Physics - Theory, High Energy Physics - Phenomenology, Nuclear Theory
Year: 2011
DOI identifier: 10.1103/PhysRevD.84.046004
OAI identifier: oai:arXiv.org:1103.5688
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