## April 24, Jeremy Clark, University of Mississippi

Math Colloquium: Fri at 2:30pm-3:30pm, CH 458Title. Phase transition in the intermediate disorder regime for a directed polymer model

Abstract. I will discuss a random directed polymer model defined on a hierarchical diamond lattice. The focus will be on a so-called

*intermediate disorder*regime in which the size of the system is scaled in proportion to the temperature of the system. In this high temperature setting, there is a striking phase transition in the behavior of the model as the constant of proportionality between the size of the system and the temperature varies; above a certain critical value the model exhibits

*weak disorder*and below it there is

*strong disorder*. I will explain these terms in my talk. This work is in collaboration with Tom Alberts and Sasha Kocic.

## News 2015

- Newly minted Mathematics majors
**Tori Gandy**and**Adrian Jones**were selected by the Teach for America program to serve as teachers in Chicago and Oklahoma, respectively. - Fast-track student
**Andrew Arnold**was accepted to attend the Budapest Semesters in Mathematics program for next academic year (2015-16). - Fast-track student
**Jarrod Hicks**scored among the top 25% of participants on the William Lowell Putnam Mathematical Competition, considered to be one of the most prestigious mathematics examination in the world. UAB's Putnam team is sponsored by Profs. Jung and Simanyi. The competition is held once a year in December. - Ph.D. student
**Alzaki Fadlallah**and Fast-track student**Alexandra Fry**won Best Lecture Award and Best Undergraduate Poster Award, respectively, at the 39th SIAM-SEAS conference held March 20-22 at UAB. Congratulations. - Ph.D. students
**Alzaki Fadlallah**and**Caleb Moxley**won first and second place, respectively, at the 2015 Graduate Student Research Days. Congratulations. **Terrence Muthoka**,**Jessica Barnett**, and**Rachel Ejem**were chosen as the department's Outstanding PhD Student, Outstanding Master's Student, and Outstanding Undergraduate Student, respectively. Congratulations to all.- Math and neuroscience major
**Hriday Bhambhvani**won first place for his poster at the Undergraduate Research Competition in Biological Sciences at the 91st Annual Meeting of the Alabama Academy of Sciences hosted recently by the University of West Alabama.