Nonequilibrium phase transitions in a model of ecological and evolutionary dynamics
Department
Physics
Major
Physics
Research Advisor
Vojta, Thomas
Advisor's Department
Physics
Funding Source
This work was partially supported by the NSF under Grant Nos. DMR-1205803 and DMR-1506152.
Abstract
We employ large-scale Monte-Carlo simulations to study the extinction transition in a model describing the ecological and evolutionary dynamics of biopopulations. In the case of a neutral, time-independent fitness landscape, the extinction transition falls into the well-known directed percolation universality class. Temporal disorder (representing, for example, climate fluctuations) drastically changes the transition and leads to an exotic infinite-noise critical point. It is characterized by anomalously large fluctuations of the population size and logarithmically slow dynamics.
Biography
Skye Tackkett is an undergraduate junior majoring in Physics and minoring in Mathematics and German. Currently, they are a member of the Gaffers Guild and the president of the Society of Physics Students. After earning their bachelor’s, they intend to obtain a PhD in Materials Science with a research focus on nanostructured material applications and following that, they would like to become a professor and continue researching nanomaterials.
Research Category
Sciences
Presentation Type
Poster Presentation
Document Type
Poster
Award
Sciences oral presentation, Third place
Location
Upper Atrium/Hall
Presentation Date
11 Apr 2017, 9:00 am - 11:45 am
Nonequilibrium phase transitions in a model of ecological and evolutionary dynamics
Upper Atrium/Hall
We employ large-scale Monte-Carlo simulations to study the extinction transition in a model describing the ecological and evolutionary dynamics of biopopulations. In the case of a neutral, time-independent fitness landscape, the extinction transition falls into the well-known directed percolation universality class. Temporal disorder (representing, for example, climate fluctuations) drastically changes the transition and leads to an exotic infinite-noise critical point. It is characterized by anomalously large fluctuations of the population size and logarithmically slow dynamics.
