97 citations · 97 across the 1 of their papers we have counts for
6 papers
The perturbative CFT optical theorem and high-energy string scattering in AdS at one loop
António Antunes, Miguel S. Costa, Tobias Hansen +2
We derive an optical theorem for perturbative CFTs which computes the double discontinuity of conformal correlators from the single discontinuities of lower order correlators, in a…
Operator expansions, layer susceptibility and two-point functions in BCFT
Parijat Dey, Tobias Hansen, Mykola Shpot
We show that in boundary CFTs, there exists a one-to-one correspondence between the boundary operator expansion of the two-point correlation function and a power series expansion o…
Dispersion Relation for CFT Four-Point Functions
Agnese Bissi, Parijat Dey, Tobias Hansen
We present a dispersion relation in conformal field theory which expresses the four point function as an integral over its single discontinuity. Exploiting the analytic properties…
Analytic Bootstrap for Boundary CFT
Agnese Bissi, Tobias Hansen, Alexander Söderberg
We propose a method to analytically solve the bootstrap equation for two point functions in boundary CFT. We consider the analytic structure of the correlator in Lorentzian signatu…
AdS Weight Shifting Operators
Miguel S. Costa, Tobias Hansen
We construct a new class of differential operators that naturally act on AdS harmonic functions. These are weight shifting operators that change the spin and dimension of AdS repre…
Bounds for OPE coefficients on the Regge trajectory
Miguel S. Costa, Tobias Hansen, João Penedones
We consider the Regge limit of the CFT correlation functions and , where is a vec…