47 citations · 421 across the 20 of their papers we have counts for
20 papers
Effective Gravitational Couplings of Kaluza-Klein Gauge Theories
Sujay K. Ashok, Renjan Rajan John, T. J. Layon +2
We study the effective gravitational couplings of four-dimensional Kaluza-Klein compactified gauge theories with eight supercharges. The class of theories we consider are the pure…
Effective Gravitational Couplings of Higher-Rank Supersymmetric Gauge Theories
Renjan Rajan John, Sujoy Mahato, Madhusudhan Raman
When placed on four-manifolds, gauge theories couple to topological invariants of the background via two functions and . General considerations allow…
Constraining momentum space CFT correlators with consistent position space OPE limit and the collider bound
Sachin Jain, Renjan Rajan John, Abhishek Mehta +1
Consistency with position space OPE limit requires momentum space CFT correlators to have only total energy singularity. We show that this requirement gives a simple proof of the k…
Relation between parity-even and parity-odd CFT correlation functions in three dimensions
Sachin Jain, Renjan Rajan John
In this paper we relate the parity-odd part of two and three point correlation functions in theories with exactly conserved or weakly broken higher spin symmetries to the parity-ev…
Anyonic correlation functions in Chern-Simons matter theories
Yatharth Gandhi, Sachin Jain, Renjan Rajan John
Using a novel relation between the parity even and odd parts of a correlator, we show that the 3-point function of conserved or weakly broken currents in 3d CFT can be obtained fro…
Higher spin 3-point functions in 3d CFT using spinor-helicity variables
Sachin Jain, Renjan Rajan John, Abhishek Mehta +2
In this paper we use the spinor-helicity formalism to calculate 3-point functions involving scalar operators and spin- conserved currents in general 3d CFTs. In spinor-helicity…
Double copy structure of parity-violating CFT correlators
Sachin Jain, Renjan Rajan John, Abhishek Mehta +2
We show that general parity-violating 3d conformal field theories show a double copy structure for momentum space 3-point functions of conserved currents, stress tensor and margina…
Momentum space parity-odd CFT 3-point functions
Sachin Jain, Renjan Rajan John, Abhishek Mehta +2
We study the parity-odd sector of 3-point functions comprising of scalar operators and conserved currents in conformal field theories in momentum space. We use momentum space confo…
Weights, Recursion relations and Projective triangulations for Positive Geometry of scalar theories
Renjan Rajan John, Ryota Kojima, Sujoy Mahato
The story of positive geometry of massless scalar theories was pioneered in [1] in the context of bi-adjoint theories. Further study proposed that the positive geometry for a…
Constraining momentum space correlators using slightly broken higher spin symmetry
Sachin Jain, Renjan Rajan John, Vinay Malvimat
In this work, building up on [1] we present momentum space Ward identities related to broken higher spin symmetry as an alternate approach to computing correlators of spinning oper…
Momentum space spinning correlators and higher spin equations in three dimensions
Sachin Jain, Renjan Rajan John, Vinay Malvimat
In this article, we explicitly compute in momentum space the three and four-point correlation functions involving scalar and spinning operators in the free bosonic and the free fer…
On Positive Geometries of Quartic Interactions II : Stokes polytopes, Lower Forms on Associahedra and Worldsheet Forms
P B Aneesh, Pinaki Banerjee, Mrunmay Jagadale +3
In [1], two of the present authors along with P. Raman attempted to extend the Amplituhedron program for scalar field theories [2] to quartic scalar interactions. In this paper we…
Modular properties of surface operators in N=2 SQCD
Sourav Ballav, Renjan Rajan John
We study half-BPS surface operators in N=2 supersymmetric QCD in four dimensions with gauge group SU(2) and four fundamental flavours. We compute the twisted chiral superpotential…
Surface operators in N=2 SQCD and Seiberg Duality
Sujay K. Ashok, Sourav Ballav, Marialuisa Frau +1
We study half-BPS surface operators in N=2supersymmetric asymptotically conformal gauge theories in four dimensions with SU(N) gauge group and 2N fundamental flavours using localiz…
Surface operators, dual quivers and contours
S. K. Ashok, S. Ballav, M. Billo' +5
We study half-BPS surface operators in four dimensional N=2 SU(N) gauge theories, and analyze their low-energy effective action on the four dimensional Coulomb branch using equivar…
Surface operators in 5d gauge theories and duality relations
S. K. Ashok, M. Billo, E. Dell'Aquila +4
We study half-BPS surface operators in 5d N=1 gauge theories compactified on a circle. Using localization methods and the twisted chiral ring relations of coupled 3d/5d quiver gaug…
Surface operators, chiral rings, and localization in N=2 gauge theories
S. K. Ashok, M. Billo, E. Dell'Aquila +4
We study half-BPS surface operators in supersymmetric gauge theories in four and five dimensions following two different approaches. In the first approach we analyze the chiral rin…
Modular and duality properties of surface operators in N=2* gauge theories
S. K. Ashok, M. Billo, E. Dell'Aquila +3
We calculate the instanton partition function of the four-dimensional N=2* SU(N) gauge theory in the presence of a generic surface operator, using equivariant localization. By anal…
Exact WKB Analysis of N = 2 Gauge Theories
Sujay K. Ashok, Dileep P. Jatkar, Renjan R. John +2
We study N = 2 supersymmetric gauge theories with gauge group SU(2) coupled to fundamental flavours, covering all asymptotically free and conformal cases. We re-derive, from the co…
Non-perturbative studies of N=2 conformal quiver gauge theories
S. K. Ashok, M. Billó, E. Dell'Aquila +3
We study N=2 super-conformal field theories in four dimensions that correspond to mass-deformed linear quivers with n gauge groups and (bi-)fundamental matter. We describe them usi…