

Non-reciprocity in many-body systems
By Michel Fruchart, Laboratoire Gulliver, ESPCI, CNRS, 75005 Paris, France
Room Charpak, entrance building, ground floor, ESPCI
Zoom link: https://espci.zoom.us/j/84713074918?pwd=euJDTLaa4bTtK0EhdZ1sTMm7iAGJxn.1
ID: 847 1307 4918
Password: G.Parisi
Out of equilibrium, a lack of reciprocity is the rule rather than the exception. Non-reciprocity occurs in systems including active matter, driven-dissipative quantum systems, networks of neurons, and solidification fronts.
I will discuss the effect of non-reciprocity on the collective behavior of many-body systems, ranging from non-symmetric response functions and their effect on mechanics and fluid flows to phase transitions into time-dependent phases in which spontaneously broken continuous symmetries are dynamically restored.
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