Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session E53: Heineman and Oppenheim Award SessionInvited
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Sponsoring Units: GSNP DCMP Chair: Greg Huber Room: BCEC 253C |
Tuesday, March 5, 2019 8:00AM - 8:36AM |
E53.00001: Dannie Heineman Prize for Mathematical Physics Talk: Solvable systems of nonlinear ODEs: old and new results Invited Speaker: Francesco Calogero Some old and new "exactly solvable" dynamical systems will be tersely reviewed. |
Tuesday, March 5, 2019 8:36AM - 9:12AM |
E53.00002: Irwin Oppenheim Award Talk: The Thermodynamic Uncertainty Relation: Theoretical Introduction Invited Speaker: Todd Gingrich In thermodynamic equilibrium, molecular motions cannot generate a non-vanishing average current—of particles, mass, charge, etc. This fact is elegantly seen as a consequence of the time-reversible nature of equilibrium dynamics, which obeys detailed balance. It is well known that detailed balance can be broken by external driving, either with a time-dependent protocol (as in flashing ratchets) or by coupling a system to multiple incommensurate reservoirs (say a high-chemical-potential bath on one side of a membrane and a low-chemical-potential bath on the other side). In this latter case, the system coupled to the baths experiences a time-independent thermodynamic driving force causing the system to relax into a nonequilibrium steady state (NESS) that generates current. Since the current is made up of individual transport events, it will fluctuate around the steady state value, and the scale of these fluctuations is constrained by the typical rate of dissipation into the reservoirs, a constraint which has been labeled a Thermodynamic Uncertainty Relation (TUR). In this talk I will outline this TUR and illustrate the large-deviation-theoretic arguments underlying its derivation. |
Tuesday, March 5, 2019 9:12AM - 9:48AM |
E53.00003: Irwin Oppenheim Award Talk: The Thermodynamic Uncertainty Relation: Applications And Extensions Invited Speaker: Jordan Horowitz At the mesoscale, thermal noise is an unavoidable nuisance interfering with the function of molecular devices, from molecular motors to chemical clocks. For these devices to operate, they must constantly consume energy to suppress these fluctuations. Remarkably, the recently discovered thermodynamic uncertainty relation offers a universal bound on the energetic cost to attain precision in the face of such noise. In this talk, I will discuss examples drawn from the literature of how one can apply the thermodynamic uncertainty relation to gain insight into the design principles underpinning the function of such molecular-scale devices as stochastic heat engines, molecular motors, self assembly, chemical kinetics and nonlinear response. I will then turn to extensions and generalizations of the thermodynamic uncertainty relation to highlight new opportunities for applications and insight. |
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