Large-n excitations in the ferromagnetic Ising field theory in a small magnetic field: mass spectrum and decay widths

Details Large-n excitations in the ferromagnetic Ising field theory in a small magnetic field: mass spectrum and decay widths Large-n excitations in the ferromagnetic Ising field theory in a small magnetic field: mass spectrum and decay widths

2005-09-20

arxiv.org/abs/hep-th/0509149v1

Phys.Rev.Lett. 95 (2005) 250601

Physics

High Energy Physics

High Energy Physics - Theory

5 pages, no figures

Scientific paper

10.1103/PhysRevLett.95.250601

In presence of a small magnetic field h, the elementary excitations in the
scaling two-dimensional Ising model are studied perturbatively in h in the
ferromagnetic phase. For excitations with large numbers n, the mass spectrum is
obtained in the first order in h. The decay widths of excitations with energies
above the stability threshold are calculated in the leading h^3-order.

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