Ioanna Kourkoulou

activity

20172026

most citedPure states in the SYK model and nearly-

A d S_{2}

gravity

74 citations · 88 across the 6 of their papers we have counts for

collaborators

Showing 2023Show all

2 papers · 1 filter

hep-th2023

$S$ -matrix positivity without Lorentz invariance: a case study

Lam Hui, Ioanna Kourkoulou, Alberto Nicolis +2

We investigate the analytic structure of scattering amplitudes in theories in which Lorentz invariance is spontaneously broken. We do so by computing and studying the S-matrix for…

hep-th2023★ 1 cited

Apparently superluminal superfluids

Ioanna Kourkoulou, Michael J. Landry, Alberto Nicolis +1

We consider the superfluid phase of a specific renormalizable relativistic quantum field theory. We prove that, within the regime of validity of perturbation theory and of the supe…

S-matrix positivity without Lorentz invariance: a case study

Apparently superluminal superfluids

$S$ -matrix positivity without Lorentz invariance: a case study