93 citations · 290 across the 13 of their papers we have counts for
16 papers
Bootstrapping 3D Conformal Field Theories with Product Analytic Functionals
Kausik Ghosh, Zechuan Zheng
We introduce a bootstrap method for three-dimensional conformal field theories based on product analytic functionals. The construction combines one-dimensional analytic functionals…
The Geometry of Quantum Complexity in Open Systems
Ezra Acalapati, Kausik Ghosh, Giuseppe Policastro
We extend Nielsen's geometric approach for quantum complexity from closed to open quantum systems, whose dynamics is governed by Lindbladian evolution. In this framework, complexit…
Neural Spectral Bias and Conformal Correlators II: Modular and Annulus Bootstrap
Kausik Ghosh, Sidhaarth Kumar, Vasilis Niarchos +1
We develop a neural network bootstrap framework for reconstructing partition functions of two-dimensional conformal field theories (CFTs) based on modular invariance and the Cardy…
Neural Spectral Bias and Conformal Correlators I: Introduction and Applications
Kausik Ghosh, Sidhaarth Kumar, Vasilis Niarchos +1
We demonstrate that simple feed-forward neural networks (NNs) can accurately compute correlation functions of conformal field theories (CFTs) on a line. Strikingly, by optimising a…
Neural Networks Reveal a Universal Bias in Conformal Correlators
Kausik Ghosh, Sidhaarth Kumar, Vasilis Niarchos +1
We propose that simple neural networks (NNs) trained on crossing symmetry can reconstruct conformal correlators restricted to a line to remarkable accuracy. The input is minimal: a…
Super Sum rules for Long-Range Models
Kausik Ghosh, Miguel F. Paulos, Noé Suchel +1
We study sum rules that control the Regge limit of one-dimensional conformal field theory (CFT) correlators and relate them to dual bulk scattering processes at high energies in $\…
Bootstrapping conformal defect operators on a line
Parijat Dey, Kausik Ghosh
We study a conformal field theory with cubic anisotropic symmetry in presence of a line defect. We compute the correlators of the low lying defect operators using Feynman diagrams…
Numerical Conformal bootstrap with Analytic Functionals and Outer Approximation
Kausik Ghosh, Zechuan Zheng
This paper explores the numerical conformal bootstrap in general spacetime dimensions through the lens of a distinct category of analytic functionals, previously employed in two-di…
Polyakov blocks for the 1D CFT mixed correlator bootstrap
Kausik Ghosh, Apratim Kaviraj, Miguel F. Paulos
We introduce manifestly crossing-symmetric expansions for arbitrary systems of 1D CFT correlators. These expansions are given in terms of certain Polyakov blocks which we define an…
Crossing Symmetric Spinning S-matrix Bootstrap: EFT bounds
Subham Dutta Chowdhury, Kausik Ghosh, Parthiv Haldar +2
We develop crossing symmetric dispersion relations for describing 2-2 scattering of identical external particles carrying spin. This enables us to import techniques from Geometric…
Bulk locality for scalars and fermions with global symmetry
Subham Dutta Chowdhury, Kausik Ghosh
We count the number of independent solutions to crossing constraints of four point functions involving charged scalars and charged fermions in a CFT with large gap in the spectrum.…
Charging Up the Functional Bootstrap
Kausik Ghosh, Apratim Kaviraj, Miguel F. Paulos
We revisit the problem of bootstrapping CFT correlators of charged fields. After discussing in detail how bounds for uncharged fields can be recycled to the charged case, we introd…
Dirichlet Baths and the Not-so-Fine-Grained Page Curve
Kausik Ghosh, Chethan Krishnan
We present a doubly holographic prescription for computing entanglement entropy on a gravitating brane. It involves a Ryu-Takayanagi surface with a Dirichlet anchoring condition. I…
Crossing symmetry, transcendentality and the Regge behaviour of 1d CFTs
Pietro Ferrero, Kausik Ghosh, Aninda Sinha +1
We develop the technology for Polyakov-Mellin (PM) bootstrap in one-dimensional conformal field theories (CFT). By adding appropriate contact terms, we bootstrap various effect…
Polyakov-Mellin Bootstrap for AdS loops
Kausik Ghosh
We consider holographic CFTs and study their large expansion. We use Polyakov-Mellin bootstrap to extract the CFT data of all operators, including scalars, till . We…
Simplifying large spin bootstrap in Mellin space
Parijat Dey, Kausik Ghosh, Aninda Sinha
We set up the conventional conformal bootstrap equations in Mellin space and analyse the anomalous dimensions and OPE coefficients of large spin double trace operators. By decompos…