78 citations · 400 across the 15 of their papers we have counts for
17 papers · 1 filter
Localization, Factorization and Dualities for Elliptic Kernels
Alessio Fontanarossa, Fabrizio Nieri, Antonio Pittelli
We study the exact partition function of 4d supersymmetric gauge theories on a torus times a cylinder , where is a finite interval carr…
Trace Formulas for Deformed W-Algebras
Fabrizio Nieri
We investigate trace formulas in -deformed W-algebras, highlighting a novel connection to the modular double of -deformed W-algebras. In particular, we s…
Defects at the Intersection: the Supergroup Side
Fabrizio Nieri
We consider two seemingly different theories in the -background: one arises upon the most generic Higgsing of a 5d gauge theory coupled to matter,…
Intersecting Defects and Supergroup Gauge Theory
Taro Kimura, Fabrizio Nieri
We consider 5d supersymmetric gauge theories with unitary groups in the -background and study codim-2/4 BPS defects supported on orthogonal planes intersecting at the origin alo…
Quiver algebras of 4d gauge theories
Fabrizio Nieri, Yegor Zenkevich
We construct an -deformation of W algebras, corresponding to the additive version of quiver algebras which feature prominently in the 5d version of the BPS…
Localization of 4d theories on
Pietro Longhi, Fabrizio Nieri, Antonio Pittelli
We consider 4d gauge theories with R-symmetry on a hemisphere times a torus. We apply localization techniques to evaluate the exact partition function through a coh…
3d Mirror Symmetry from S-duality
Fabrizio Nieri, Yiwen Pan, Maxim Zabzine
We consider type IIB symmetry to relate the partition functions of different 5d supersymmetric Abelian linear quiver Yang-Mills theories in the -background an…
Bootstrapping the partition function
Fabrizio Nieri, Yiwen Pan, Maxim Zabzine
We consider SQCD on and propose a Higgs branch-like expression for its partition function. We support the result by arguing that the knowledge of certain BPS codimensi…
-Virasoro modular triple
Fabrizio Nieri, Yiwen Pan, Maxim Zabzine
Inspired by 5d supersymmetric Yang-Mills theories placed on the compact space , we propose an intriguing algebraic construction for the -Virasoro algebra. We show…
3d Expansions of 5d Instanton Partition Functions
Fabrizio Nieri, Yiwen Pan, Maxim Zabzine
We propose a set of novel expansions of Nekrasov's instanton partition functions. Focusing on 5d supersymmetric pure Yang-Mills theory with unitary gauge group on $\mathbb{C}^2_{q,…
Elliptic modular double and 4d partition functions
Rebecca Lodin, Fabrizio Nieri, Maxim Zabzine
We consider 4d supersymmetric (special) unitary quiver gauge theories on compact manifolds which are fibrations over . We show that their partition functions are cor…
-Virasoro modular double and 3d partition functions
Anton Nedelin, Fabrizio Nieri, Maxim Zabzine
We study partition functions of 3d U(N) gauge theories on compact manifolds which are fibrations over . We show that the partition functions are free fie…
An elliptic Virasoro symmetry in 6d
Fabrizio Nieri
We define an elliptic deformation of the Virasoro algebra. We argue that the Nekrasov partition function reproduces the chiral blocks of this alge…
Factorisation and holomorphic blocks in 4d
Fabrizio Nieri, Sara Pasquetti
We study N=1 theories on Hermitian manifolds of the form M^4=S^1xM^3 with M^3 a U(1) fibration over S^2, and their 3d N=2 reductions. These manifolds admit an Heegaard-like decompo…
5D partition functions, q-Virasoro systems and integrable spin-chains
Fabrizio Nieri, Sara Pasquetti, Filippo Passerini +1
We analyze N = 1 theories on S5 and S4 x S1, showing how their partition functions can be written in terms of a set of fundamental 5d holomorphic blocks. We demonstrate that, when…
3d & 5d gauge theory partition functions as q-deformed CFT correlators
Fabrizio Nieri, Sara Pasquetti, Filippo Passerini
3d N=2 partition functions on the squashed three-sphere and on the twisted product S2xS1 have been shown to factorize into sums of squares of solid tori partition functions, the so…
Correlators of Hopf Wilson loops in the AdS/CFT correspondence
Luca Griguolo, Stefano Mori, Fabrizio Nieri +1
We study at quantum level correlators of supersymmetric Wilson loops with contours lying on Hopf fibers of . In SYM theory the strong coupling analysis can be…