Solving a Non-Perturbative Quantum Field Theory From First Principles
| Date/Time: | Thursday, 16 Oct 2014 from 4:10 pm to 5:00 pm |
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| Location: | A401 Zaffarano Hall |
| Contact: | |
| Phone: | 515-294-8894 |
| Channel: | College of Liberal Arts and Sciences |
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We study the convergence of the light-front Fock sector expansion of the scalar Yukawa model in the non-perturbative region. The Hamiltonian field theory approach with a systematic non-perturbative renormalization scheme is exploited. We find that the one- and two-body contributions dominate the Fock space even at large coupling. However, the Fock sector hierarchy breaks down above a coupling of alpha ~ 1.7. Nevertheless, compared with lower Fock sector truncations, the one-body sector shows convergence as the number of exchanged bosons increases below this critical coupling.