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2011-09

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cc-by (c) Barranco et al., 2011
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/56343

N=1 SQCD-like theories with N_f massive flavors from AdS/CFT and beta functions

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http://dx.doi.org/10.1007/JHEP09(2011)086

Abstract

We study new supergravity solutions related to large-N c N=1 supersymmetric gauge field theories with a large number N f of massive flavors. We use a recently proposed framework based on configurations with N c color D5 branes and a distribution of N f flavor D5 branes, governed by a function N f S(r). Although the system admits many solutions, under plausible physical assumptions the relevant solution is uniquely determined for each value of x ≡ N f /N c . In the IR region, the solution smoothly approaches the deformed Maldacena-Núñez solution. In the UV region it approaches a linear dilaton solution. For x < 2 the gauge coupling β g function computed holographically is negative definite, in the UV approaching the NSVZ β function with anomalous dimension γ 0 = −1/2 (approaching − 3/(32π 2)(2N c  − N f )g 3)), and with β g  → −∞ in the IR. For x = 2, β g has a UV fixed point at strong coupling, suggesting the existence of an IR fixed point at a lower value of the coupling. We argue that the solutions with x > 2 describe a"Seiberg dual" picture where N f  − 2N c flips sign.

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Camps de galga (Física), Supersimetria, Gravitació, Relativitat (Física), Models de corda

Subject (English)

Gauge fields (Physics), Supersymmetry, Gravitation, Relativity (Physics), String models

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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BARRANCO, Alejandro, PALLANTE, Elisabetta and RUSSO, J. G. (Jorge Guillermo). N=1 SQCD-like theories with N_f massive flavors from AdS/CFT and beta functions. Journal of High Energy Physics. 2011. Vol. 1109, num. 086. ISSN 1126-6708. [consulted: 12 of August of 2026]. Available at: https://hdl.handle.net/2445/56343

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