Boson metastable ground states with spontaneous symmetry breaking
M. Chaves
Abstract
We show that a system of bosons in a T=0 quantum field theory can present metastable ground states with spontaneous symmetry breaking, even in the absence of an imaginary mass term. This gives a natural explanation to the Davis-Shellard background field (-i ω0 t) and adds a new degree of freedom in boson systems, with possible applications in cosmology, condensed matter and high energy physics.
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