80 citations · 280 across the 15 of their papers we have counts for
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hep-th2023
-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
Fermions at finite density in the path integral approach
Alessandro Podo, Luca Santoni
We study relativistic fermionic systems in spacetime dimensions at finite chemical potential and zero temperature, from a path-integral point of view. We show how to properly…
hep-th2023★ 11 cited
The connection between nonzero density and spontaneous symmetry breaking for interacting scalars
Alberto Nicolis, Alessandro Podo, Luca Santoni
We consider -symmetric scalar quantum field theories at zero temperature. At nonzero charge densities, the ground state of these systems is usually assumed to be a supe…