Exact solutions to Pauli-Villars-regulated field theories

Details Exact solutions to Pauli-Villars-regulated field theories Exact solutions to Pauli-Villars-regulated field theories

2001-07-27

arxiv.org/abs/hep-th/0107246v2

Annals Phys.296:406-424,2002

Physics

High Energy Physics

High Energy Physics - Theory

20 pages, REVTeX; minor corrections to normalizations

Scientific paper

10.1006/aphy.2002.6225

We present a new class of quantum field theories which are exactly solvable. The theories are generated by introducing Pauli-Villars fermionic and bosonic fields with masses degenerate with the physical positive metric fields. An algorithm is given to compute the spectrum and corresponding eigensolutions. We also give the operator solution for a particular case and use it to illustrate some of the tenets of light-cone quantization. Since the solutions of the solvable theory contain ghost quanta, these theories are unphysical. However, we also discuss how perturbation theory in the difference between the masses of the physical and Pauli-Villars particles could be developed, thus generating physical theories. The existence of explicit solutions of the solvable theory also allows one to study the relationship between the equal-time and light-cone vacua and eigensolutions.

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