BEGIN:VCALENDAR VERSION:2.0 PRODID:Data::ICal 0.22 BEGIN:VEVENT DESCRIPTION:Marija Vucelja\, UVA-Physics\n\n
Most of my talk will be about anomalous thermal relaxations\, such as the Mpemba effect. Towards the end of my talk\, I will also highlight a few topics in population dynamics th at I have been working on. \;
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\n\nThe Mpemba effect is a phenomenon when "\;hot can cool faster than cold"\; - a &ldquo\;shortcut&rdquo\; in relaxation to thermal equilibrium. It occurs when a physical system ini tially prepared at a hot temperature\, cools down faster than an identical system prepared at a colder temperature. The effect was discovered as a p eculiarity of water. Despite following observations in granular gasses\, m agnetic alloys\, and spin glasses\, the effect is still most often referre d to as an &ldquo\;oddity&rdquo\; of water\, although it is widespread and general.  \;I will describe how to define a Mpemba effect for an arbi trary physical system\, and show how to quantify and estimate the probabil ity of the Mpemba effect on a few examples. \;
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\n\nIn the remaining time \, I will briefly talk about the adaptation of bacterial populations and t he immune system of bacteria with CRISPR.  \;Besides being the biology '\;s newest buzzword and favorite gene editing tool\, CRISPR is also a mechanism that allows bacteria to defend adaptively against phages and oth er invading genomic material. From the standpoint of physics and biology\, the coevolution of bacteria and phages yields fascinating open questions.  \;
\n DTSTART:20181109T203000Z LOCATION:Physics Building\, Room 204 SUMMARY:Thermal relaxations\, the Mpemba effect\, and adaptation of bacteri a END:VEVENT END:VCALENDAR