Department of Physics

Moulton Hall 311

Campus Box 4560

Normal,
Il
61790-4650

309-438-8756

Model Approach to QED

By going beyond the external field approximation, we study the full quantum electrodynamical interaction between electrons, positrons and photons through a simple model Yukawa system. Because of the large dimension of the Hilbert space this project is very demanding from a computational point of view. We hope to use this approach to look into new aspects of fundamental QED interactions with space and time resolution.

### Selected Publications

"A space-time resolved approach for interacting quantum field theories"

R.E. Wagner, M.R. Ware, B.T. Shields, Q. Su and R. Grobe, **Phys. Rev. Lett.** (accepted).

"Time resolved Compton scattering for a model fermion-boson system"

R.E. Wagner, Q. Su and R. Grobe, **Phys. Rev. A.** 82, 022719 (2010).

"Space-time properties of a boson-dressed fermion for the Yukawa model"

R.E. Wagner, M.R. Ware, Q. Su and R. Grobe, **Phys. Rev. A.** 82, 032108 (2010).

"Dynamics of virtual bosons created by classical and quantum sources"

T. Cheng, Q. Su and R. Grobe, **Opt. Commun.** 283, 1008 (2010).

"Introductory review on quantum field theory with space-time resolution"

T. Cheng, Q. Su and R. Grobe, **Contemp. Phys.** 51 issue 4 (2010).

"Numerical studies of a model fermion-boson system"

T. Cheng, E.R. Gospodarczyk, Q. Su and R. Grobe, **Ann. Phys.** 325, 265 (2010).

"Transfer of source correlations to counter propagating bosons"

T. Cheng, C.C. Gerry, Q. Su and R. Grobe, **Europhys. Lett.** 88, 54001 (2009).