134 citations · 2.1k across the 50 of their papers we have counts for
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Integrability and the Conformal Field Theory of the Higgs branch
Olof Ohlsson Sax, Alessandro Sfondrini, Bogdan Stefanski
In the context of the AdS/CFT correspondence, we investigate the Higgs branch CFT. Witten showed that states localised near the small instanton singularity can be descr…
The complete worldsheet S matrix of superstrings on AdS_3 x S^3 x T^4 with mixed three-form flux
Thomas Lloyd, Olof Ohlsson Sax, Alessandro Sfondrini +1
We determine the off-shell symmetry algebra and representations of Type IIB superstring theory on with mixed R-R and NS-NS three-form flux. We use thes…
The complete AdS_3 x S^3 x T^4 worldsheet S-matrix
Riccardo Borsato, Olof Ohlsson Sax, Alessandro Sfondrini +1
We derive the non-perturbative worldsheet S matrix for fundamental excitations of Type IIB superstring theory on AdS_3 x S^3 x T^4 with Ramond-Ramond flux. To this end, we study th…
Towards integrability for AdS3/CFT2
Alessandro Sfondrini
We review the recent progress towards applying worldsheet integrability techniques to the correspondence to find its all-loop S matrix and Bethe-Yang equations. We st…
All-loop worldsheet S matrix for AdS_3 x S^3 x T^4
Riccardo Borsato, Olof Ohlsson Sax, Alessandro Sfondrini +1
We obtain the all-loop worldsheet S matrix for fundamental excitations on AdS_3 x S^3 x T^4 by studying the off-shell symmetry algebra of the superspace action in lightcone gauge.…
Renormalization: an advanced overview
Razvan Gurau, Vincent Rivasseau, Alessandro Sfondrini
We present several approaches to renormalization in QFT: the multi-scale analysis in perturbative renormalization, the functional methods à la Wetterich equation, and the loop-vert…