**Anthony Aguirre (UCSC)6:30-8:30pm Tuesday Feb 4; NYU Philosophy Department (5 Washington Place, New York, NY), 3rd floor seminar room**.

Title: Entropy in long-lived genuinely closed quantum systems

Abstract: Physical systems are often considered “closed” or “isolated” as a convenient approximation. But genuinely closed systems are possible, in some cases with unbounded duration. Starting with definitions of the state space and coarse-graining of that space into “properties,” I’ll discuss several definitions of entropy, including a relatively new framework we have developed. In the context of ultra-long-lived systems I’ll discuss equilibrium and large fluctuations away from it, including both simulations and some intriguing and perhaps counterintuitive analytic results.*There will be dinner after the talk. If you are interested, please send an email with “Dinner” in the heading to nyphilsci@gmail.com (please note that all are welcome, but only the speaker’s dinner will be covered.) If you have any other questions, please email denise.dykstra@rutgers.edu.*