Spectrum of a supersymmetric color superconductor

Faedo, Antón F.; Mateos, David; Pantelidou, Christiana; Tarrío, Javier

Abstract

We have recently shown that the ground state of N = 4, SU(Nc) super Yang- Mills coupled to Nf ≪ Nc flavors, in the presence of non-zero isospin and R-symmetry charges, is a supersymmetric, superfluid, color superconductor. The holographic description consists of Nf D7-brane probes in AdS5×S5 with electric and instantonic fields on their worldvolume. These correspond to fundamental strings and D3-branes dissolved on the D7-branes, respectively. Here we use this description to determine the spectrum of mesonic excitations. As expected for a charged superfluid we find non-relativistic, massless Goldstone modes. We also find extra ungapped modes that are not associated to the breaking of any global symmetries but to the supersymmetric nature of the ground state. If the quark mass is much smaller than the scale of spontaneous symmetry breaking a pseudo-Goldstone boson is also present. We highlight some new features that appear only for Nf> 2. We show that, in the generic case of unequal R-symmetry charges, the dissolved strings and D3-branes blow up into a D5-brane supertube stretched between the D7-branes.

Citation

Faedo, A. F., Mateos, D., Pantelidou, C., & Tarrío, J. (2019). Spectrum of a supersymmetric color superconductor. Journal of High Energy Physics, 2019(11), Article 20. https://doi.org/10.1007/jhep11%282019%29020

• Journal Article Type: Article
• Acceptance Date: Oct 19, 2019
• Online Publication Date: Nov 5, 2019
• Publication Date: Nov 30, 2019
• Deposit Date: Nov 13, 2019
• Publicly Available Date: Nov 13, 2019
• Journal: Journal of High Energy Physics
• Print ISSN: 1126-6708
• Electronic ISSN: 1029-8479
• Publisher: Scuola Internazionale Superiore di Studi Avanzati (SISSA)
• Peer Reviewed: Peer Reviewed
• Volume: 2019
• Issue: 11
• Article Number: 20
• DOI: https://doi.org/10.1007/jhep11%282019%29020
• Public URL: https://durham-repository.worktribe.com/output/1314022