Itsios, GeorgiosPenín Ascariz, José ManuelZacarías, Salomón2020-04-142020-04-142019Itsios, G., Penín, J.M. & Zacarías, S. Spin-2 excitations in Gaiotto-Maldacena solutions. J. High Energ. Phys. 2019, 231 (2019). https://doi.org/10.1007/JHEP10(2019)231http://hdl.handle.net/10347/21381In this paper we study spin-2 excitations for a class of N = 2 supersymmetric solutions of type-IIA supergravity found by Gaiotto and Maldacena. The mass spectrum of these excitations can be derived by solving a second order partial differential equation. As specific examples of this class we consider the Abelian and non-Abelian T-dual versions of the AdS5 × S5 and we study the corresponding mass spectra. For the modes that do not “feel” the (non-)Abelian T-duality transformation we provide analytic formulas for the masses, while for the rest we were only able to derive the spectra numerically. The numerical values that correspond to large masses are compared with WKB approximate formulas. We also find a lower bound for the masses. Finally, we study the field theoretical implications of our results and propose dual spin-2 operators.eng© The Authors 2019. Open Access. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are creditedhttps://creativecommons.org/licenses/by/4.0/AdS-CFT correspondenceGauge-gravity correspondenceSupersymmetric gauge theoryjournal article10.1007/JHEP10(2019)2311029-8479open access