University of Minnesota
School of Physics & Astronomy

Physics and Astronomy Calendar

Wednesday, April 15th 2015
1:25 pm:
Nuclear Physics Seminar in 435 Physics
Speaker: Chen Guangyao, Iowa State University
Subject: BFLQ approach to lepton pair production in ultraperipheral heavy ion collisions

Basis Light Front Quantizition (BLFQ) is a nonperturbative treatment of quantum field theory, which adopts light-front quantization and the Hamiltonian formalism. BLFQ offers a first principles solution to many outstanding puzzles in nuclear and particle physics. BLFQ can also be used to study time-dependent scattering processes (tBLFQ). As its first realistic application, we apply principles of tBLFQ to lepton pair production in ultraperipheral heavy ion collisions. Due to the strong electromagnetic fields generated in heavy ion collision, perturbative approaches may lose its prediction power especially if two heavy ions collide with small impact parameter. As a non perturbative approach, tBLFQ takes into account the production and multiple-scattering of the leptons by the strong electromagnetic fields generated in the collisions inherently. Preliminary results with highly truncated basis will be presented.

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