D-instantons are used to probe the near-horizon geometry of D3-branes systems on orbifold spaces. For fractional D3-branes, D-instanton calculus correctly reproduces the gauge beta-function and U(I)R anomaly of the corresponding N = 2 non-conformal Super Yang-Mills theories. For D3-branes wrapping the orbifold singularity, D-instantons can be identified with gauge instantons on ALE space, providing evidence of AdS/CFT duality for gauge theories on curved spaces.
D-instantons on orbifolds and gauge/gravity correspondence / Tanzini, Alessandro. - In: FORTSCHRITTE DER PHYSIK. - ISSN 0015-8208. - 50:8-9(2002), pp. 992-998. (Intervento presentato al convegno 2nd Annual Meeting of the EU-Network on the Quantum Structure of Spacetime and the Geometric Nature of Fundamental Interactions tenutosi a CORFU, GREECE nel SEP 13-20, 2001) [10.1002/1521-3978(200209)50:8/9<992::AID-PROP992>3.0.CO;2-B].
D-instantons on orbifolds and gauge/gravity correspondence
Tanzini, Alessandro
2002-01-01
Abstract
D-instantons are used to probe the near-horizon geometry of D3-branes systems on orbifold spaces. For fractional D3-branes, D-instanton calculus correctly reproduces the gauge beta-function and U(I)R anomaly of the corresponding N = 2 non-conformal Super Yang-Mills theories. For D3-branes wrapping the orbifold singularity, D-instantons can be identified with gauge instantons on ALE space, providing evidence of AdS/CFT duality for gauge theories on curved spaces.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
