# Seminars & Colloquia Calendar

## Entropy and entropoids

#### Daan Frenkel - University of Cambridge

Location: ** zoom**

Date & time: Wednesday, 16 June 2021 at 10:45AM - 11:45PM

** **The term entropy is increasingly used to denote measurable or computable quantities that only have some of the properties of the entropy of Clausius, Boltzmann and Gibbs. Whilst "entropoid" quantities may be interesting in their own right, it is important to be clear about what they are, and what they are not.

In my talk, I will discuss several entropy-related quantities from a computation perspective. In particular, I will discuss Edwards' "granular entropy" , i.e. the logarithm of the number of distinct packings of N granular particles in a fixed volume V, Computable Information Density, and (if time allows) the free energy of well equilibrated glasses.

The methods to compute (or at least estimate) these entropoid quantities have evolved in recent years. That development makes it urgent to look critically at their credentials as an entropy.

Chiara Damiolini, Ian Coley and Franco Rota -Charles Weibel Organizer's Page

Brooke Logan

Wujun Zhang Organizer's webpage

P. Gupta, X.Huang and J. Song Organizer's webpage

Swastik Kopparty, Sepehr Assadi Seminar webpage

Jeffry Kahn, Bhargav Narayanan, Jinyoung Park Organizer's webpage

Brooke Ogrodnik, Website

Robert Dougherty-Bliss and Doron Zeilberger --> homepage

Paul Feehan, Daniel Ketover, Natasa Sesum Organizer's webpage

Lev Borisov, Emanuel Diaconescu, Angela Gibney, Nicolas Tarasca, and Chris Woodward Organizer's webpage

Jason Saied Seminar webpage

Brian Pinsky, Rashmika Goswami website

Quentin Dubroff Organizer's webpage

James Holland; Organizer website

Edna Jones Organizer's webpage

Brooke Ogrodnik website

Yanyan Li, Zheng-Chao Han, Jian Song, Natasa Sesum Organizer's Webpage

Organizer: Luochen Zhao

Yanyan Li, Zheng-Chao Han, Natasa Sesum, Jian Song Organizer's Page

Lisa Carbone, Yi-Zhi Huang, James Lepowsky, Siddhartha Sahi Organizer's webpage

Simon Thomas website

Kasper Larsen, Daniel Ocone and Kim Weston Organizer's page

Joel Lebowitz, Michael Kiessling

Yanyan Li, Haim Brezis Organizer's Webpage

Stephen D. Miller, John C. Miller, Alex V. Kontorovich, Alex Walker seminar website

Stephen D. Miller

Brooke Ogrodnik, Website

Organizers: Yanyan Li, Z.C. Han, Jian Song, Natasa Sesum

Yael Davidov Seminar webpage

Kristen Hendricks, Xiaochun Rong, Hongbin Sun, Chenxi Wu Organizer's page

Fioralba Cakoni Seminar webpage

Ebru Toprak, Organizer

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