36 citations · 195 across the 19 of their papers we have counts for
19 papers
An Introduction to String Newton-Cartan Holography and Integrability
Andrea Fontanella, Juan Miguel Nieto García
String Newton-Cartan holography is a new example of gauge/gravity duality relating non-relativistic string theory and gauge theories. We review how to construct a family of string…
A perturbative approach to the non-relativistic string spectrum
Marius de Leeuw, Andrea Fontanella, Juan Miguel Nieto García
In this letter we use a perturbative approach to find the spectrum of non-relativistic strings in the String Newton-Cartan (SNC) AdSS spacetime. We perturb the bosoni…
Constructing Non-Relativistic AdS/CFT Holography
Andrea Fontanella, Juan Miguel Nieto García
We construct a new type of holographic correspondence between non-relativistic string theory in String Newton-Cartan AdSS and Galilean Yang-Mills supplemented with 5…
Flowing from relativistic to non-relativistic string vacua in AdSS
Andrea Fontanella, Juan Miguel Nieto García
We find the connection between relativistic and non-relativistic string vacua in AdSS in terms of a free parameter flow. First, we show that the famous relativis…
Non-relativistic string monodromies
Andrea Fontanella, Juan Miguel Nieto García, Olof Ohlsson Sax
Spectral curve methods proved to be powerful techniques in the context of relativistic integrable string theories, since they allow to derive the semiclassical spectrum from the mi…
Non-extremal near-horizon geometries
Andrea Fontanella
When Gaussian null coordinates are adapted to a Killing horizon, the near-horizon limit is defined by a coordinate rescaling and then by taking the regulator parameter $\varepsilon…
Extending the non-relativistic string AdS coset
Andrea Fontanella, Juan Miguel Nieto García
Inspired by Lie algebra expansion, we consider an extension of the algebra introduced in arXiv:2203.07386 for the non-relativistic string coset action in AdSS. We sho…
Coset space actions for nonrelativistic strings
Andrea Fontanella, Stijn J. van Tongeren
We formulate the stringy nonrelativistic limits of the flat space and AdSS string as coset models, based on the string Bargmann and extended string Newton-Hooke algeb…
Classical string solutions in Non-Relativistic AdSS: Closed and Twisted sectors
Andrea Fontanella, Juan Miguel Nieto García
We find classical closed string solutions to the non-relativistic AdSS string theory which are the analogue of the BMN and GKP solutions for the relativistic theory.…
Light-Cone Gauge in Non-Relativistic AdSS String Theory
Andrea Fontanella, Juan Miguel Nieto García
We discuss the non-relativistic limit of string theory in AdSS for different choices of embedding coordinates. We show that, if we consider Cartesian coordinates, the…
Lie Algebra Expansion and Integrability in Superstring Sigma-Models
Andrea Fontanella, Luca Romano
Lie algebra expansion is a technique to generate new Lie algebras from a given one. In this paper, we apply the method of Lie algebra expansion to superstring -models with a $\m…
On the supersymmetric solutions of the Heterotic Superstring effective action
Andrea Fontanella, Tomas Ortin
We consider the effective action of the Heterotic Superstring to first order in alpha prime and derive the necessary and sufficient conditions that a field configuration has to sat…
The Effectiveness of Relativistic Invariance in AdS
Andrea Fontanella, Olof Ohlsson Sax, Bogdan Stefański +2
We use relativistic invariance to investigate two aspects of integrable AdS string theory. Firstly, we write down the all-loop TBA equations for the massless sector of the th…
Geometry of Massless Scattering in Integrable Superstring
Andrea Fontanella, Alessandro Torrielli
We consider the action of the -deformed Poincaré superalgebra on the massless non-relativistic R-matrix in ordinary (undeformed) integrable type II…
Black Horizons and Integrability in String Theory
Andrea Fontanella
This thesis is devoted to the study of geometric aspects of black holes and integrable structures in string theory. In the first part, symmetries of the horizon and its bulk extens…
Massless scattering and Bethe ansatz
Andrea Fontanella, Alessandro Torrielli
We first analyse the integrable scattering theory describing the massless excitations of superstrings in the relativistic limit. The matrix part of th…
Moduli Spaces of Transverse Deformations of Near-Horizon Geometries
A. Fontanella, J. B. Gutowski
We investigate deformations of extremal near-horizon geometries in Einstein-Maxwell-Dilaton theory, including various topological terms, and also in D=11 supergravity. By linearizi…
Massless sector of AdS_3 superstrings: a geometric interpretation
Andrea Fontanella, Alessandro Torrielli
We study the recently discovered q-deformed Poincare' supersymmetry of the AdS_3/CFT_2 integrable massless scattering, and demonstrate how the S-matrix is invariant under boosts. T…
Anomaly Corrected Heterotic Horizons
A. Fontanella, J. B. Gutowski, G. Papadopoulos
We consider supersymmetric near-horizon geometries in heterotic supergravity up to two loop order in sigma model perturbation theory. We identify the conditions for the horizons to…