Sergio ErasoSergio Eraso — physicist working on nonequilibrium statistical physics and biophysics, building models, simulations, and tools for complex systems.https://sejr.me/Press Release: Competition at the front of expanding populations (IT)https://www.insalutenews.it/in-salute/dalle-colonie-batteriche-una-lezione-sullevoluzione-ecco-come-si-espandono-le-popolazioni-in-competizione/https://www.insalutenews.it/in-salute/dalle-colonie-batteriche-una-lezione-sullevoluzione-ecco-come-si-espandono-le-popolazioni-in-competizione/Mon, 03 Aug 2026 00:00:00 GMTSymmetry transformations of fieldshttps://sejr.me/journal/symmetry-transformations/https://sejr.me/journal/symmetry-transformations/How scalar, vector, covector, and general tensor fields transform under the symmetries of a group.Thu, 16 Jul 2026 00:00:00 GMTWhat is Astro?https://sejr.me/journal/what-is-astro/https://sejr.me/journal/what-is-astro/A simple introduction to Astro — the web framework powering this website.Thu, 28 May 2026 00:00:00 GMTWhat is WebGL?https://sejr.me/journal/what-is-webgl/https://sejr.me/journal/what-is-webgl/Use that GPU!Wed, 27 May 2026 00:00:00 GMTWhy random walks spread like √thttps://sejr.me/journal/random-walks-sqrt-t/https://sejr.me/journal/random-walks-sqrt-t/A one-paragraph intuition for diffusive scaling.Tue, 12 May 2026 00:00:00 GMTSpoke at the inaugural Dean of Science Symposium and patron's dinnerhttps://sejr.me/journal/dean-of-science-symposium/https://sejr.me/journal/dean-of-science-symposium/Represented physics at the inaugural symposium, and told my story at the Patron's Dinner.Fri, 10 Apr 2026 00:00:00 GMTWhy does ice melt?https://sejr.me/journal/why-ice-melts/https://sejr.me/journal/why-ice-melts/Ice, water, and steam are all made of the same molecule, so why does one turn into another at a sharp temperature? Melting is a trade: the ice gains entropy, the room pays for it, and temperature sets the exchange rate.Fri, 30 Aug 2024 00:00:00 GMTEntropy and the arrow of timehttps://sejr.me/journal/entropy-arrow-of-time/https://sejr.me/journal/entropy-arrow-of-time/Physicists say no law is more sacred than the second law of thermodynamics. With the help of a stopwatch, a box of coins, and a little fifth-grade counting, you can see what entropy really is and why time only runs one way.Mon, 24 Jun 2024 00:00:00 GMTA picture proof of the product rulehttps://sejr.me/journal/product-rule/https://sejr.me/journal/product-rule/The product rule falls out of a rectangle — no calculus required.Sun, 09 Jul 2023 00:00:00 GMTAttended my first conferencehttps://meetings-archive.aps.org/mar/2023/z01/2https://meetings-archive.aps.org/mar/2023/z01/2APS March Meeting 2023 in Las VegasFri, 10 Mar 2023 00:00:00 GMTi love you, brohttps://sejr.me/journal/i-love-you-bro/https://sejr.me/journal/i-love-you-bro/Men are given little social leniency to be physically and emotionally intimate with other men in a way that is race-dependent. This has led to the intersection of male intimacy and race being used as a comedic punchline both in social media trends and Hollywood films. Tue, 03 May 2022 00:00:00 GMTThe passion for learning gradeshttps://www.emorywheel.com/article/f290c82c-fdd0-49ec-9181-774486430288https://www.emorywheel.com/article/f290c82c-fdd0-49ec-9181-774486430288College students are more worried about their test scores than their actual understanding of the content they are learning, to no fault of their own. Read about this issue and my proposed solution on the Emory Wheel.Wed, 26 Feb 2020 00:00:00 GMTBecame a QuestBridge scholarhttps://www.questbridge.org/https://www.questbridge.org/How I got into Emory, and how I graduated debt-free.Sat, 26 Jan 2019 00:00:00 GMT