Light Cone 2015

Session

7.

22 Sept 2015, 14:30

Aula Bruno Touschek (Laboratori Nazionali di Frascati)

Conveners

7.

• Tobias Frederico (Instituto Tecnologico de Aeronautica)

12. Solving the inhomogeneous Bethe-Salpeter Equation in Minkowski space

Michele Viviani (PI)

22/09/2015, 14:30

Invited talk

The inhomogeneous Bethe-Salpeter Equation for an interacting system, composed by two massive scalars exchanging a massive scalar, is numerically investigated in ladder approximation, directly in Minkowski space, by using an approach based on the Nakanishi integral representation. In this contribution, the results obtained for the scattering lengths and phase-shifts will be presented and...

44. On non-perturbative renormalization in the truncated Yukawa model

Prof. Vladimir Karmanov (Lebedev Physical Institute)

22/09/2015, 15:00

Invited talk

In the framework of the Light-Front Tamm-Dancoff method, we applied the sector-dependent renormalization scheme to the quenched Yukawa model. A review of the results obtained in this way is given. The Yukawa model incorporated spin is studied in the truncation N=3 (one fermion and two mesons), whereas the spinless Yukawa model is truncated up to a higher value N=4. The eigenvector...

40. Triviality of the light-front vacuum and zero modes

Prof. Wayne Polyzou (The University of Iowa)

22/09/2015, 15:30

Invited talk

We use algebraic methods to reconcile the triviality of the vacuum in different light-front field theories with the inequivalence of vacuua in different canonical theories. We show how the inequivalence arises by extending the vacuum functional from the light-font Fock algebra to the algebra of local observables. This extension leads to an identification of a sub-algebra of the...