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Creators/Authors contains: "Bhattacharya, Ritabrata"

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  1. ; ; (, Physical Review Letters)
    We present a new gauging of maximal supergravity in five spacetime dimensions with gauge group containing ISO(5), involving the local scaling symmetry of the metric, and admitting a supersymmetric anti–de Sitter vacuum. We show this maximal supergravity to arise by consistent truncation of M theory on the (nonspherical, nonparallelizable) six-dimensional geometry associated to a stack of N M5 branes wrapped on a smooth Riemann surface. The existence of this truncation allows us to holographically determine the complete, universal spectrum of light operators of the dual four-dimensional N = 2 theory of class S . We then compute holographically the superconformal index of the dual field theory at large N , finding perfect agreement with previously known field theory results in specific limits. Published by the American Physical Society2025 
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    Free, publicly-accessible full text available May 1, 2026
  2. (, Journal of High Energy Physics)
    A<sc>bstract</sc> In this work computation of the renormalised mass at two loop order for the NS sector of heterotic string theory is attempted. We first implement the vertical integration prescription for choosing a section avoiding the spurious poles due to the presence of a required number of picture changing operators. As a result the relevant amplitude on genus 2 Riemann surface can be written as a boundary term. We then identify the 1PI region of the moduli space having chosen a gluing compatible local coordinates around the external punctures. We also identify the relevant integrands and the relevant region of integration for the modular parameters at the boundary. 
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