Cornell University

LASSP Seminar with Roy Beck-Bartai

Wednesday, July 18, 2018 at 2:00pm to 3:00pm

Physical Sciences Building, 416
245 East Avenue

Roy Beck-Bartai
Department of Condensed Matter Physics
School of Physics and Astronomy
Tel-Aviv University

From kB to kB: Entropy evaluation made easy
Entropy and free-energy estimation are key in thermodynamic characterization of simulated systems ranging from spin models through polymers, colloids, protein structure, and drug-design. Current techniques suffer from being model specific, requiring abundant computation resources and simulation at conditions far from the studied realization. In this talk, I will present a novel universal scheme to calculate entropy using lossless compression algorithms and validate it on simulated systems of increasing complexity. Our results show accurate entropy values compared to benchmark calculations while being computationally effective. In molecular-dynamics simulations of protein folding, we exhibit unmatched detection capability of the folded states by measuring previously undetectable entropy fluctuations along the simulation timeline. Such entropy evaluation opens a new window onto the dynamics of complex systems and allows efficient free-energy calculations.


Hosted by Itai Cohen

Poster available

Event Type

Seminar

Departments

LASSP

Tags

physics, lassp

Speaker

Roy Beck-Bartai

Speaker Affiliation

Tel Aviv University

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