Particle decay in Ising field theory with magnetic field

Details Particle decay in Ising field theory with magnetic field Particle decay in Ising field theory with magnetic field

2007-03-30

arxiv.org/abs/hep-th/0703288v1

Physics

High Energy Physics

High Energy Physics - Theory

13 pages, 9 figures. To appear in the proceedings of the XVth International Congress on Mathematical Physics, Rio de Janeiro,

Scientific paper

The scaling limit of the two-dimensional Ising model in the plane of temperature and magnetic field defines a field theory which provides the simplest illustration of non-trivial phenomena such as spontaneous symmetry breaking and confinement. Here we discuss how Ising field theory also gives the simplest model for particle decay. The decay widths computed in this theory provide the obvious test ground for the numerical methods designed to study unstable particles in quantum field theories discretized on a lattice.

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