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Title: | N=1 SQCD-like theories with N_f massive flavors from AdS/CFT and beta functions |
Author: | Barranco, Alejandro Pallante, Elisabetta Russo, J. G. (Jorge Guillermo) |
Keywords: | Camps de galga (Física) Supersimetria Gravitació Relativitat (Física) Models de corda Gauge fields (Physics) Supersymmetry Gravitation Relativity (Physics) String models |
Issue Date: | Sep-2011 |
Publisher: | Springer Verlag |
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. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1007/JHEP09(2011)086 |
It is part of: | Journal of High Energy Physics, 2011, vol. 1109, p. 086 |
URI: | http://hdl.handle.net/2445/56343 |
Related resource: | http://dx.doi.org/10.1007/JHEP09(2011)086 |
ISSN: | 1126-6708 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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