Thrill: to cause (someone) to feel very excited or happy
String: a long, thin piece of twisted thread that you use to attach things, tie things together, or hang things.
A series of similar things.
strings on solid footing- secuencias en bases solidas
intractable: not easily managed controlled or solved.
What I can understand is that Maldacena´s theory proposed that an audacious model of the Universe in which gravity arises from infinitesimally thin vibrating strings could be reinterpreted in terms of well-established physics. Also he proposed that exists nine dimensions plus one of time would be merely an hologram so the real action would play out in a simpler, flatter cosmos where there is no gravity.
This also remember me of the quantum physics rejected by Einstein but I need to research more about it.