235 citations · 1.1k across the 21 of their papers we have counts for
24 papers
Where is M-theory in the space of scattering amplitudes?
Andrea Guerrieri, Harish Murali, Joao Penedones +1
We use the S-matrix bootstrap to carve out the space of unitary, analytic, crossing symmetric and supersymmetric graviton scattering amplitudes in nine, ten and eleven dimensions.…
Bridging Positivity and S-matrix Bootstrap Bounds
Joan Elias Miro, Andrea Guerrieri, Mehmet Asim Gumus
The main objective of this work is to isolate Effective Field Theory scattering amplitudes in the space of non-perturbative two-to-two amplitudes, using the S-matrix Bootstrap. We…
Rigorous bounds on the Analytic -matrix
Andrea Guerrieri, Amit Sever
We consider a dual -matrix Bootstrap approach in space-time dimensions which relies solely on the rigorously proven analyticity, crossing, and unitarity properties of…
Dual EFT Bootstrap: QCD flux tubes
Joan Elias Miró, Andrea Guerrieri
We develop a bootstrap approach to Effective Field Theories (EFTs) based on the concept of duality in optimisation theory. As a first application, we consider the fascinating set o…
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…
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…
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…
Flux Tube S-matrix Bootstrap
Joan Elias Miro, Andrea L. Guerrieri, Aditya Hebbar +2
We bootstrap the S-matrix of massless particles in unitary, relativistic two dimensional quantum field theories. We find that the low energy expansion of such S-matrices is strongl…
Bootstrapping QCD: the Lake, the Peninsula and the Kink
Andrea L. Guerrieri, Joao Penedones, Pedro Vieira
We consider the S-matrix bootstrap of four dimensional scattering amplitudes with symmetry and no bound-states. We explore the allowed space of scattering lengths which para…
On the exactness of soft theorems
Andrea L. Guerrieri, Yu-tin Huang, Zhi-Zhong Li +1
Soft behaviours of S-matrix for massless theories reflect the underlying symmetry principle that enforces its masslessness. As an expansion in soft momenta, sub-leading soft theore…
The analytic structure of conformal blocks and the generalized Wilson-Fisher fixed points
Ferdinando Gliozzi, Andrea L. Guerrieri, Anastasios C. Petkou +1
We describe in detail the method used in our previous work arXiv:1611.10344 to study the Wilson-Fisher critical points nearby generalized free CFTs, exploiting the analytic structu…
Generalized Wilson-Fisher critical points from the conformal OPE
Ferdinando Gliozzi, Andrea Guerrieri, Anastasios C. Petkou +1
We study possible smooth deformations of Generalized Free Conformal Field Theories in arbitrary dimensions by exploiting the singularity structure of the conformal blocks dictated…
Exploring soft constraints on effective actions
Massimo Bianchi, Andrea L. Guerrieri, Yu-tin Huang +2
We study effective actions for simultaneous breaking of space-time and internal symmetries. Novel features arise due to the mixing of Goldstone modes under the broken symmetries wh…
The free CFTs
Andrea Guerrieri, Anastasios C. Petkou, Congkao Wen
We introduce the conformal field theories that describe the shadows of the lowest dimension composites made out of massless free scalars and fermions in dimensions. We argue th…
On the soft limit of closed string amplitudes with massive states
Massimo Bianchi, Andrea L. Guerrieri
We extend our analysis of the soft behaviour of string amplitudes with massive insertions to closed strings at tree level (sphere). Relying on our previous results for open strings…
On the soft limit of tree-level string amplitudes
Massimo Bianchi, Andrea L. Guerrieri
We study the soft behavior of string scattering amplitudes at three level with massless and massive external insertions, relying on different techniques to compute 4-points amplitu…
The decay as a discriminant between tetraquarks and meson molecules
Angelo Esposito, Andrea L. Guerrieri, Alessandro Pilloni
Understanding the nature of the exotic XYZ resonances is one of the open problems in hadronic spectroscopy. Despite the experimental efforts, the structure of these particles still…
On the color structure of Yang-Mills theory with static sources in a periodic box
L. Giusti, A. L. Guerrieri, S. Petrarca +2
We present an exploratory numerical study on the lattice of the color structure of the wave functionals of the SU(3) Yang-Mills theory in the presence of a static pair. I…
Soft behavior of string amplitudes with external massive states
Andrea L. Guerrieri
We briefly discuss the soft behavior of scattering amplitudes both in string and quantum field theory. In particular we show a general argument about the validity of soft theorems…
On the soft limit of open string disk amplitudes with massive states
Massimo Bianchi, Andrea L. Guerrieri
We discuss the soft behaviour of open string amplitudes with gluons and massive states in any dimension. Notwithstanding non-minimal couplings of massive higher spin states to gluo…
Four-Quark Hadrons: an Updated Review
Angelo Esposito, Andrea L. Guerrieri, Fulvio Piccinini +2
The past decade witnessed a remarkable proliferation of exotic charmonium-like resonances discovered at accelerators. In particular, the recently observed charged states are clearl…
A note on the newly observed Y(4220) resonance
R. Faccini, G. Filaci, A. L. Guerrieri +2
BES III Collaboration has recently observed a vector resonance in the chi_{c0} omega channel, at a mass of about 4220 MeV, named Y(4220). Hints of a similar structure appear in the…
Probing the nature of Z_c states via the eta_c rho decay
A. Esposito, A. L. Guerrieri, A. Pilloni
The nature of the so-called XYZ states is a long-standing problem. It has been suggested that such particles may be described as compact four-quark states or loosely bound meson mo…
Has the Goldstone theorem been revisited?
A. Guerrieri, A. Pilloni
A recent paper (arXiv:1404.5619) claimed the presence of a loophole in the current-algebra proof of Goldstone Theorem. The enforcing of manifest covariance would lead to contradict…