activity
20192026
most cited deformations and integrable spin chains

52 citations · 77 across the 8 of their papers we have counts for

collaborators

10 papers

hep-th2026

Deriving the Quantum Spectral Curve II: T-system and QSC

Andrea Cavaglià, Davide Polvara, Nicolò Primi +2

We complete the systematic derivation of the Quantum Spectral Curve (QSC) for strings on with pure Ramond--Ramond (RR) flux, buildin…

hep-th2026

Deriving the Quantum Spectral Curve I: Y-system and discontinuity relations

Andrea Cavaglià, Davide Polvara, Nicolò Primi +2

The mirror Thermodynamic Bethe Ansatz (TBA) describes the spectrum of superstrings supported by a mixture of Ramond-Ramond (RR) and…

hep-th2025

Exchange relations and crossing

Sergey Frolov, Davide Polvara, Alessandro Sfondrini

We discuss the scattering matrix of two-dimensional integrable QFTs whose fields obey non-trivial exchange relations. We show that crossing equations for such models have to be mod…

hep-th2025★ 6 cited

Perturbed symmetric-product orbifold: first-order mixing and puzzles for integrability

Matheus Fabri, Alessandro Sfondrini, Torben Skrzypek

We study the marginal deformation of the symmetric-product orbifold theory Sym which corresponds to introducing a small amount of Ramond-Ramond flux into the dual $AdS_3\t…

hep-th2025

Interpolating families of integrable AdS3 backgrounds

Fiona K. Seibold, Alessandro Sfondrini

We construct families of integrable deformations that interpolate between and either or $AdS_3\times S^2…

hep-th2024★ 1 cited

Exact approaches on the string worldsheet

Saskia Demulder, Sibylle Driezen, Bob Knighton +5

We review different exact approaches to string theory. In the context of the Green-Schwarz superstring, we discuss the action in curved backgrounds and its supercoset formulation,…

hep-th2023★ 1 cited

Comments on Integrability in the Symmetric Orbifold

Sergey Frolov, Alessandro Sfondrini

We present a map between the excitation of the symmetric-product orbifold CFT of , and of the worldsheet-integrability description of of Lloyd, Ohl…

hep-th2023★ 13 cited

The Tensionless Limit of Pure-Ramond-Ramond AdS3/CFT2

Alberto Brollo, Dennis le Plat, Alessandro Sfondrini +1

Despite impressive advances in the AdS3/CFT2 correspondence, the setup involving Ramond-Ramond backgrounds, which is related to the D1-D5 system of branes, remained relatively poor…

hep-th2020★ 4 cited

Long Strings and Symmetric Product Orbifold from the AdS Bethe Equations

Alessandro Sfondrini

A particularly rich class of integrable systems arises from the AdS/CFT duality. There, the two-dimensional quantum field theory living on the string worldsheet may be understood i…

hep-th2019★ 52 cited

deformations and integrable spin chains

Enrico Marchetto, Alessandro Sfondrini, Zhou Yang

We consider current-current deformations that generalise ones, and show that they may be also introduced for integrable spin chains. In analogy with the integrable QFT s…