3 papers
hep-th2026
Positivity in Massive Spin-3/2 EFTs and the Planck-Suppressed Neighbourhood of Supergravity
Jay Desai, Diptimoy Ghosh, Saurabh Pant
It is well known that a strictly massless spin- particle can interact consistently only within supergravity. Recently, positivity arguments have shown that an effective field…
hep-th2026
Stable Causality and Microcausality for Drummond-Hathrell Photons
Madhukar Deb, Jay Desai, Diptimoy Ghosh
Local superluminal photon propagation arises at in the Drummond Hathrell (DH) effective action obtained by integrating out the electron in QED coupled to gr…
hep-ph2025
Positivity at 1-Loop: Bounds on Photon and Gluon EFTs
Jay Desai, Diptimoy Ghosh
In this paper, we attempt to derive ``positivity" bounds on Photon and Gluon Effective Field Theories (EFTs) at one loop level. While for the Photon case, the one loop amplitude is…