Giant gravitons on the Schrödinger pp-wave geometry

• Main Authors: George Georgiou, Dimitrios Zoakos
• Format: Article
• Language: English
• Published: SpringerOpen 2020-03-01
• Series: Journal of High Energy Physics
• Subjects: AdS-CFT Correspondence; Brane Dynamics in Gauge Theories; D-branes
• Online Access: http://link.springer.com/article/10.1007/JHEP03(2020)185

Abstract We construct a new giant graviton solution on the recently constructed pp-wave geometry of the non-supersymmetric Schrödinger background. That solution exhibits an intriguing behavior as the deformation parameter of the spacetime varies. Firstly, the degeneracy between the giant and the point graviton is lifted for the benefit of the giant graviton as soon as the deformation is turned on. Secondly, when the deformation parameter exceeds a critical value the barrier separating the point from the giant graviton disappears. This suggests that the mere presence of a D3-brane leads to the spontaneous breaking of conformal invariance. We perform a detailed analysis of the full bosonic spectrum, which reveals that the deformation induces a coupling between the scalar and the gauge field fluctuations. It is exactly this coupling that keeps the giant graviton free of tachyonic instabilities. Furthermore, the giant graviton configuration completely breaks the supersymmetry of the pp-wave background, as the Kappa-symmetry analysis suggests.