(4:15 p.m. - 5 p.m.)

Dr. Pavel Nadolsky (SMU)

Following upon the groundbreaking discovery of the Higgs boson, experiments at the Large Hadron Collider look for answers to profound mysteries in fundamental physics. The LHC measurements encounter a common challenge of distinguishing between rare new phenomena and numerous physics effects associated with strong interactions of elementary particles. The interplay of theoretical and experimental factors in LHC processes such as Higgs boson production is fascinatingly rich. I discuss how we can study this interplay using state-of-the-art predictions in theory of quantum chromodynamics and a powerful statistical method of 'global analysis' of 'big' experimental data from the LHC and other experiments.

]]>(2 p.m. - 3 p.m.) Location: FN 2.102.

**Professor Mark Levi**

**Department of Mathematics**

**Penn State University**

**Traveling waves in chains of pendula**

On the one hand, chains of coupled pendula arise as models in many settings (the Frenkel-Kontorova model of an atomic lattice, dislocations in crystals, charge density waves, dry friction, Josephson junctions). On the other hand, these chains exhibit fascinating dynamics, and are very rich from the mathematical point of view as they exhibit virtually all phenomena known in the field of dynamical systems including KAM behavior, Arnold diffusion, chaos, traveling waves, and, in a continuous limit, complete integrability. In this talk I will describe a sampling of interesting dynamics, some of which is unexpected, beginning with some background and ending with some recent results.

Refreshments will be served in the FN 2.102 30 minutes prior to the talk

Sponsored by the Department of Mathematical Sciences

]]>