115 citations · 1k across the 36 of their papers we have counts for
39 papers
Schwinger-Keldysh effective actions for non-hydrodynamic poles and branch cuts
Andrea Amoretti, Matteo Anselmi, Daniel K. Brattan
Retarded thermal correlators, analytically continued to complex frequency, exhibit non-hydrodynamic poles and branch cuts that constrain hydrodynamics. We construct Gaussian Schwin…
The price of locality: Maxwell-Cattaneo charge transport in Schwinger-Keldysh effective field theory
Andrea Amoretti, Matteo Anselmi, Daniel K. Brattan
We determine the conditions under which the nonlinear Maxwell-Cattaneo theory of charge transport admits a local Gaussian Schwinger-Keldysh embedding with a particular modified dyn…
Staying positive: bounds for non-Gaussian noise in Schwinger-Keldysh effective field theory
Andrea Amoretti, Daniel K. Brattan
Modern effective field theories of dissipative hydrodynamics, built on the Schwinger-Keldysh (SK) formalism, include thermal noise that is not Gaussian. The resultant higher-order…
Linear response beyond hydrodynamic poles
Andrea Amoretti, Daniel K. Brattan, Jonas Rongen
We consider the problem of writing an effective, linearised theory in small derivatives that reproduces the Mittag-Leffler expansion of a charge current correlator with an arbitrar…
A new web of dualities from Majorana Fermions
Andrea Amoretti, Matteo Anselmi, Daniel K. Brattan
We explore new infrared dualities in -dimensional quantum field theories involving Majorana fermions. Building on the recently proposed operator-deformation approach to boso…
The Hamiltonian mechanics of exotic particles
Andrea Amoretti, Daniel K. Brattan, Luca Martinoia
We develop Hamiltonian mechanics on Aristotelian manifolds, which lack local boost symmetry and admit absolute time and space structures. We construct invariant phase space dynamic…