ICTP South American Institute for Fundamental Research

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20112025

most citedObservation of Gravitational Waves from a Binary Black Hole Merger

14.2k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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91 papers · 1 filter

hep-th2024★ 8 cited

Coupled minimal models revisited II: Constraints from permutation symmetry

António Antunes, Connor Behan

Coupling $N$ large $m$ minimal models and flowing to IR fixed points is a systematic way to build new classes of compact unitary 2d CFTs which are likely to be irrational, and pote…

hep-th2024★ 9 cited

Real-Time Scattering in Ising Field Theory using Matrix Product States

Raghav G. Jha, Ashley Milsted, Dominik Neuenfeld +2

We study scattering in Ising Field Theory (IFT) using matrix product states and the time-dependent variational principle. IFT is a one-parameter family of strongly coupled non-inte…

hep-th2024★ 4 cited

Regge Limit of One-Loop String Amplitudes

Pinaki Banerjee, Lorenz Eberhardt, Sebastian Mizera

We study the high-energy limit of $2 \to 2$ one-loop string amplitudes at fixed momentum transfer. For the closed string, the high-energy behaviour of the amplitudes can be determi…

hep-th2023★ 5 cited

Holography of Broken U(1) Symmetry

Ian Chaffey, Sylvain Fichet, Philip Tanedo

We examine the Abelian Higgs model in (d+1)-dimensional anti-de Sitter space with an ultraviolet brane. The gauge symmetry is broken by a bulk Higgs vacuum expectation value trigge…

hep-th2022★ 8 cited

One-loop string amplitudes in AdS $_{5} \times$ S $^{5}$ : Mellin space and sphere splitting

F. Aprile, J. M. Drummond, R. Glew +1

We study string corrections to one-loop amplitudes of single-particle operators $O_{p}$ in $A d S_{5} \times S^{5}$ . The tree-level correlators in supergravity enjoy an accidental 1…

hep-th2022★ 6 cited

Spinning Hexagons

Carlos Bercini, Vasco Goncalves, Alexandre Homrich +1

We reduce the computation of three point function of three spinning operators with arbitrary polarizations to a statistical mechanics problem via the hexagon formalism. The central…

hep-th2022★ 7 cited

Stampedes II: Null Polygons in Conformal Gauge Theory

Enrico Olivucci, Pedro Vieira

We consider correlation functions of single trace operators approaching the cusps of null polygons in a double-scaling limit where so-called $cusp times$ $t_i^2 = g^2 \log…

hep-th2022★ 10 cited

Scalar-Mediated Quantum Forces Between Macroscopic Bodies and Interferometry

Philippe Brax, Sylvain Fichet

We study the quantum force between classical objects mediated by massive scalar fields bilinearly coupled to matter. The existence of such fields is motivated by dark matter, dark…

hep-th2021★ 4 cited

Superconformal blocks in diverse dimensions and $B C$ symmetric functions

Francesco Aprile, Paul Heslop

We uncover a precise relation between superblocks for correlators of superconformal field theories (SCFTs) in various dimensions and symmetric functions related to the $B C$ root sy…

hep-th2021★ 23 cited

On Holography in General Background and the Boundary Effective Action from AdS to dS

Sylvain Fichet

We study quantum fields on an arbitrary, rigid background with boundary. We derive the action for a scalar in the holographic basis that separates the boundary and bulk degrees of…

hep-th2021★ 24 cited

The Wilson Loop -- Large Spin OPE Dictionary

Carlos Bercini, Vasco Gonçalves, Alexandre Homrich +1

We work out the map between null polygonal hexagonal Wilson loops and spinning three point functions in large $N$ conformal gauge theories by mapping the variables describing the t…

hep-th2021★ 9 cited

$A d S_{5} \times S^{5}$ supergravity vertex operators

Thiago Fleury, Lucas N. S. Martins

In any type II superstring background, the supergravity vertex operators in the pure spinor formalism are described by a gauge superfield. In this paper, we obtain for the first ti…

hep-th2021★ 110 cited

Where is String Theory?

Andrea Guerrieri, Joao Penedones, Pedro Vieira

We use the S-matrix bootstrap to carve out the space of unitary, crossing symmetric and supersymmetric graviton scattering amplitudes in ten dimensions. We focus on the leading Wil…

hep-th2020★ 82 cited

S-matrix Bootstrap for Effective Field Theories: Massless Pions

Andrea Guerrieri, Joao Penedones, Pedro Vieira

We use the numerical S-matrix bootstrap method to obtain bounds on the two leading Wilson coefficients of the chiral lagrangian controlling the low-energy dynamics of massless pion…

hep-th2020★ 27 cited

Opacity from Loops in AdS

Alexandria Costantino, Sylvain Fichet

We investigate how quantum dynamics affects the propagation of a scalar field in Lorentzian AdS. We work in momentum space, in which the propagator admits two spectral representati…

hep-th2020★ 41 cited

Dual S-matrix Bootstrap I: 2D Theory

Andrea L Guerrieri, Alexandre Homrich, Pedro Vieira

Using duality in optimization theory we formulate a dual approach to the S-matrix bootstrap that provides rigorous bounds to 2D QFT observables as a consequence of unitarity, cross…

hep-th2020★ 60 cited

Multipoint Bootstrap I: Light-Cone Snowflake OPE and the WL Origin

Carlos Bercini, Vasco Gonçalves, Pedro Vieira

We initiate an exploration of the conformal bootstrap for $n > 4$ point correlation functions. Here we bootstrap correlation functions of the lightest scalar gauge invariant operator…

hep-th2020★ 54 cited

Large $p$ explorations. From SUGRA to big STRINGS in Mellin space

Francesco Aprile, Pedro Vieira

We explore a new way of probing scattering of closed strings in $A d S_{5} \times S^{5}$ , which we call `the large $p$ limit'. It consists of studying four-point correlators of single-par…

hep-th2020★ 19 cited

Decagon at Two Loops

Thiago Fleury, Vasco Goncalves

We have computed the simplest five point function in $N = 4$ SYM at two loops using the hexagonalization approach to correlation functions. Along the way we have determin…

hep-th2020★ 20 cited

Effective Field Theory in AdS: Continuum Regime, Soft Bombs, and IR Emergence

Alexandria Costantino, Sylvain Fichet, Philip Tanedo

We consider a scalar field in a slice of Lorentzian five-dimensional AdS at arbitrary energies. We show that the presence of bulk interactions separate the behavior of the theory i…

hep-th2019★ 20 cited

Massive vector fields in Kerr--Newman and Kerr--Sen black hole spacetimes

Ramiro Cayuso, Oscar J. C. Dias, Finnian Gray +5

The superradiant instability modes of ultralight massive vector bosons are studied for weakly charged rotating black holes in Einstein--Maxwell gravity (the Kerr--Newman solution)…

hep-th2019★ 45 cited

The O(N) S-matrix Monolith

Lucía Córdova, Yifei He, Martin Kruczenski +1

We consider the scattering matrices of massive quantum field theories with no bound states and a global $O (N)$ symmetry in two spacetime dimensions. In particular we explore the sp…

hep-th2019★ 35 cited

SUSY S-matrix Bootstrap and Friends

Carlos Bercini, Matheus Fabri, Alexandre Homrich +1

We consider the 2D S-matrix bootstrap in the presence of supersymmetry, $Z_{2}$ and $Z_{4}$ symmetry. At the boundary of the allowed S-matrix space we encounter well…