5 papers · 1 filter
Towards the Parametric Renormalization of the S-matrix -- I
Pinaki Banerjee, Harsh, Alok Laddha
Zimmermann's forest formula is the corner stone of perturbative renormalization in QFT. By renormalizing individual Feynman graphs, it generates the UV finite S-matrix. This approa…
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…
Analytic Bootstrap for Logarithmic CFT
Pinaki Banerjee, Parijat Dey
We study logarithmic conformal field theory (LogCFT) in four dimensions using conformal bootstrap techniques in the large spin limit. We focus on the constraints imposed by conform…
Stokes Polytopes : The positive geometry for interactions
Pinaki Banerjee, Alok Laddha, Prashanth Raman
In a remarkable recent work [arXiv : 1711.09102] by Arkani-Hamed et al, the amplituhedron program was extended to the realm of non-supersymmetric scattering amplitudes. In particul…
Sine-Gordon Theory : Entanglement entropy and holography
Pinaki Banerjee, Atanu Bhatta, B. Sathiapalan
We compute change in entanglement entropy for a single interval in dimensional sine-Gordon model perturbatively in the coupling. The sine-Gordon perturbation can be thought o…