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November 15, 20213:00 pm – 4:00 pm (CDT)

Lessons and Surprises from Kaluza-Klein Spectra


Gabriel Larios (Institute of Theoretical Physics, Madrid)


Falk Hassler



Mitchell Institute for Fundamental Physics & Astronomy

College Station, Texas 77843

Event Details

Infinite towers of massive modes arise for every compactification of higher dimensional theories. Understanding the properties of these Kaluza-Klein towers on non-trivial solutions with an AdS factor has been a longstanding issue with clear holographic interest, as they describe the spectrum of single-trace operators of the dual CFTs at strong coupling and large N. In this talk, I will focus on two classes of solutions of such kind. The first class consists of AdS4 S-fold solutions of Type IIB supergravity that can be obtained from maximal gauged supergravity in D=4. For the later part, I will describe new families of solutions in N=(1,1) supergravity in D=6 which uplift from half-maximal supergravity in D=3. In both cases, the spectra can be computed using recent techniques from Exceptional Field Theory, and the information thus obtained leads to several unexpected conclusions.

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