54 citations · 265 across the 22 of their papers we have counts for
24 papers
Knizhnik-Zamolodchikov equations and the analytic structure of strings in AdS
Sergio Iguri, Nicolas Kovensky, Julian H. Toro
The pole structure of string correlators in AdS encodes essential information about the AdS/CFT duality. The corresponding residues for spectrally flowed three-point fu…
Advances in the holographic description of hot and dense QCD matter
Nicolas Kovensky, Andreas Schmitt
We review and extend recent progress on QCD-like phases at nonzero temperature and chemical potentials within the gauge-gravity duality. We focus on the Witten-Sakai-Sugimoto model…
Lecture notes on strings in AdS from the worldsheet and the AdS/CFT duality
Nicolas Kovensky
These lecture notes, based on the course given at IPhT in November/December 2023, provide a pedagogical introduction to the study of strings in AdS backgrounds supported by NSN…
Superstring four-point functions in AdS
Emiliano Barone, Sergio Iguri, Nicolas Kovensky +1
We study spacetime four-point functions of chiral primary operators for superstrings propagating in AdS from the worldsheet perspective, allowing for extern…
Softening holographic nuclear matter
Christian Ecker, Nicolas Kovensky, Orestis Papadopoulos +1
Baryons in the holographic Witten-Sakai-Sugimoto model are described by instanton solutions on the flavor branes. A commonly used approximation for dense baryonic matter replaces t…
Thermal pion condensation: holography meets lattice QCD
Nicolas Kovensky, Andreas Schmitt
The holographic Witten-Sakai-Sugimoto model is often employed to describe strongly-coupled baryonic and isospin-asymmetric matter, for example in the context of neutron stars. Here…
Spectral flow and the conformal block expansion for strings in AdS
Sergio Iguri, Nicolas Kovensky, Julian H. Toro
We present a detailed study of spectrally flowed four-point functions in the SL(2,) WZW model, focusing on their conformal block decomposition. Dei and Eberhardt conjec…
Ascending the attractor flow in the D1-D5 system
Silvia Georgescu, Monica Guica, Nicolas Kovensky
We study maximally supersymmetric irrelevant deformations of the D1-D5 CFT that correspond to following the attractor flow in reverse in the dual half-BPS black string solutions of…
Spectral flow and the exact AdSCFT chiral ring
Sergio Iguri, Nicolas Kovensky, Julian H. Toro
We compute all worldsheet three-point functions involving spectrally-flowed operators in chiral multiplets of the space-time theory for strings in AdSST, th…
Phases of cold holographic QCD: baryons, pions and rho mesons
Nicolas Kovensky, Aaron Poole, Andreas Schmitt
We improve the holographic description of isospin-asymmetric baryonic matter within the Witten-Sakai-Sugimoto model by accounting for a realistic pion mass, computing the pion cond…
A proof for string three-point functions in AdS
Davide Bufalini, Sergio Iguri, Nicolas Kovensky
Correlation functions of the -WZW model involving spectrally flowed vertex operators are notoriously difficult to compute. An explicit integral expression…
Smearing and Unsmearing KKLT AdS Vacua
Mariana Graña, Nicolas Kovensky, Dimitrios Toulikas
Gaugino condensation on D-branes wrapping internal cycles gives a mechanism to stabilize the associated moduli. According to the effective field theory, this gives rise, when combi…
Spectral flow and string correlators in AdS
Sergio Iguri, Nicolas Kovensky, Julian H. Toro
We consider three-point correlation functions for superstrings propagating in AdS. In the RNS formalism, these generically involve correlators with current…
Worldsheet computation of heavy-light correlators
Davide Bufalini, Sergio Iguri, Nicolas Kovensky +1
We compute a large collection of string worldsheet correlators describing light probes interacting with heavy black hole microstates. The heavy states consist of NS5 branes carryin…
On spectrally flowed local vertex operators in AdS
Sergio Iguri, Nicolas Kovensky
We provide a novel local definition for spectrally flowed vertex operators in the SL(2,)-WZW model, generalising the proposal of Maldacena and Ooguri in [arXiv:hep-th/0…
Worldsheet Correlators in Black Hole Microstates
Davide Bufalini, Sergio Iguri, Nicolas Kovensky +1
Light probes interacting with heavy bound states such as black holes give rise to interesting observables containing valuable dynamical information. Recently, a family of black hol…
Predictions for neutron stars from holographic nuclear matter
Nicolas Kovensky, Aaron Poole, Andreas Schmitt
We discuss masses, radii, and tidal deformabilities of neutron stars constructed from the holographic Witten-Sakai-Sugimoto model. Using the same model for crust and core of the st…
Building a realistic neutron star from holography
Nicolas Kovensky, Aaron Poole, Andreas Schmitt
We employ the recently improved description of dense baryonic matter within the Witten-Sakai-Sugimoto model to construct neutron stars. In contrast to previous holographic approach…
Isospin asymmetry in holographic baryonic matter
Nicolas Kovensky, Andreas Schmitt
We study baryonic matter with isospin asymmetry, including fully dynamically its interplay with pion condensation. To this end, we employ the holographic Witten-Sakai-Sugimoto mode…
Black hole microstates from the worldsheet
Davide Bufalini, Sergio Iguri, Nicolas Kovensky +1
Recently an exact worldsheet description of strings propagating in certain black hole microstate geometries was constructed in terms of null-gauged WZW models. In this paper we con…
Gaugino mass term for D-branes and Generalized Complex Geometry
Mariana Graña, Nicolas Kovensky, Ander Retolaza
We compute the four-dimensional gaugino mass for a Dp-brane extended in spacetime and wrapping a cycle on the internal geometry in a warped compactification with fluxes. Motivated…
Winding modes and the reflection symmetry in AdS
Sergio Iguri, Nicolas Kovensky, Leila Maestri +1
We compute the contact term of the two-point function for the SL()-WZNW model in the winding sector. After reviewing some generalities of the model and its Euclidean c…
Heavy Holographic QCD
Nicolas Kovensky, Andreas Schmitt
We study the phase structure of the Witten-Sakai-Sugimoto model in the plane of temperature and baryon chemical potential, including the effect of a nonzero current quark mass. Our…
Kähler moduli stabilization from ten dimensions
Iosif Bena, Mariana Graña, Nicolas Kovensky +1
We describe the back-reaction of gaugino condensates in supersymmetric AdS Type II String Theory compactifications with fluxes. We use generalized complex geometry to capture t…