80 citations · 280 across the 15 of their papers we have counts for
9 papers · 1 filter
Naturalness of vanishing black-hole tides
Julio Parra-Martinez, Alessandro Podo
We provide a symmetry argument for the vanishing and non-renormalization of static Love numbers for spherically symmetric black holes at full nonlinear order in four-dimensional Ge…
Hadamard tails from flat-space perturbation theory
Ameya Chavda, Alberto Nicolis, Alessandro Podo +1
The short-distance singular structure of the two-point function of a free scalar field in curved spacetime has a universal behavior that characterizes well-behaved states (called H…
Microcausality without Lorentz invariance
Lam Hui, Alberto Nicolis, Alessandro Podo +1
Microcausality -- the vanishing of commutators outside the lightcone -- is a fundamental property of relativistic quantum field theories. We derive its implications for two-point f…
-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…
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…
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…