97 citations · 802 across the 19 of their papers we have counts for
19 papers
AdS Virasoro-Shapiro amplitude with KK modes
Giulia Fardelli, Tobias Hansen, Joao A. Silva
We determine the first curvature correction for the string amplitude of two supergravity states and two Kaluza-Klein modes on , which is dual to the…
The AdS Virasoro-Shapiro Amplitude
Luis F. Alday, Tobias Hansen
We present a constructive method to compute the AdS Virasoro-Shapiro amplitude, order by order in AdS curvature corrections. At kth order the answer takes the form of a genus zero…
Emergent world-sheet for the AdS Virasoro-Shapiro amplitude
Luis F. Alday, Tobias Hansen, Joao A. Silva
We construct a representation for the first AdS curvature correction to the Virasoro-Shapiro amplitude, as an integral over the Riemann sphere. The integrand is that of the Virasor…
On the spectrum and structure constants of short operators in N=4 SYM at strong coupling
Luis F. Alday, Tobias Hansen, Joao A. Silva
We study short operators in planar SYM at strong coupling, for general spin and symmetric traceless representations. At strong coupling their dimension grow…
AdS Virasoro-Shapiro from single-valued periods
Luis F. Alday, Tobias Hansen, Joao A. Silva
We determine the full correction to the flat-space Wilson coefficients which enter the AdS Virasoro-Shapiro amplitude in SYM theory at strong coupling. T…
AdS Virasoro-Shapiro from dispersive sum rules
Luis F. Alday, Tobias Hansen, Joao A. Silva
We consider the four-point correlator of the stress-energy tensor in SYM, to leading order in inverse powers of the central charge, but including all order corrections…
Modular invariant holographic correlators for SYM with general gauge group
Luis F. Alday, Shai M. Chester, Tobias Hansen
We study the stress tensor four-point function for SYM with gauge group , , or at large . When , the theory is dua…
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…
Radial expansion for spinning conformal blocks
Miguel S. Costa, Tobias Hansen, João Penedones +1
This paper develops a method to compute any bosonic conformal block as a series expansion in the optimal radial coordinate introduced by Hogervorst and Rychkov. The method reduces…
Projectors and seed conformal blocks for traceless mixed-symmetry tensors
Miguel S. Costa, Tobias Hansen, João Penedones +1
In this paper we derive the projectors to all irreducible SO(d) representations (traceless mixed-symmetry tensors) that appear in the partial wave decomposition of a conformal corr…
From Entanglement Witness to Generalized Catalan Numbers
Eliahu Cohen, Tobias Hansen, Nissan Itzhaki
The problem of entanglement detection for arbitrary spin systems is analyzed. We demonstrate how a single measurement of the squared total spin can probabilistically discern separa…
Conformal correlators of mixed-symmetry tensors
Miguel S. Costa, Tobias Hansen
We generalize the embedding formalism for conformal field theories to the case of general operators with mixed symmetry. The index-free notation encoding symmetric tensors as polyn…
String theory in target space
Rutger H. Boels, Tobias Hansen
It is argued that the complete S-matrix of string theory at tree level in a flat background can be obtained from a small set of target space properties, without recourse to the wor…
Examples of N=2 to N=1 supersymmetry breaking
Tobias Hansen, Jan Louis
In this paper we consider gauged N=2 supergravities which arise in the low-energy limit of type II string theories and study examples which exhibit spontaneous partial supersymmetr…