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Brane-induced Skyrmions – Baryons in Holographic QCD –
| Content Provider | Semantic Scholar |
|---|---|
| Author | Nawa Suganuma Kojo |
| Copyright Year | 2006 |
| Abstract | We study baryons in holographic QCD with D4/D8/D8 multi D brane system. In holo-graphic QCD, the baryon appears as a topologically non-trivial chiral soliton in a four-dimensional effective theory of mesons, which is called 'Brane-induced Skyrmion'. We derive and calculate the Euler-Lagrange equation for the hedgehog configuration with chiral profile F (r) and ρ-meson profile˜G(r), and obtain the soliton solution of the holographic QCD. §1. Holographic QCD, color confinement and chiral symmetry breaking Based on the recent remarkable progress in the concept of gauge/gravity duality, Sakai-Sugimoto succeeded to construct the low-energy theory of massless QCD from the multi D-brane system consisting of D4/D8/D8 in type IIA superstring theory. 1) In the D4/D8/D8 holographic QCD, D4/D8/D8-branes are placed as Table I, and D4 branes are compactified along an extra direction x 4 ≡ τ with the Kaluza-Klein mass scale as τ ∼ τ +2πM −1 KK , to take away the extra-modes for massless QCD. The compositions of the four-dimensional massless QCD, i.e., gluons and massless quarks, are represented as the fluctuation modes of open strings on N c-folded D4 branes and N f-folded D8 and D8 branes as Fig.1. In the D4/D8/D8 holographic QCD with large N c , D4 branes are represented by the classical supergravity background with the concept of 'gauge/gravity duality', and back reaction from the probe D8 and D8 branes to the total system can be neglected as a probe approximation. 0 1 2 3 4 5 6 7 8 9 D4 D8-D8 Table I. The space-time extension of the D4 brane and D8-D8 branes to construct massless QCD. The circle denotes the extended direction of each D brane. x0∼3 correspond to flat space-time. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv.org/pdf/hep-th/0701007v2.pdf |
| Alternate Webpage(s) | http://arxiv.org/pdf/hep-th/0701007v1.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Approximation BRANE Chirality (chemistry) Composition Erinaceidae Euler Euler–Lagrange equation Holographic principle Holography Mesons Numerous Quantum fluctuation Sakai Project Soliton Symmetry breaking |
| Content Type | Text |
| Resource Type | Article |
