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Advanced Topics in Quantum Field Theory by M. Shifman

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Kinks and domain walls

Separating in space degenerate vacua.— Quasiclassical treatment of kinks and domain walls. — Domain walls antigravitate. — Quantum corrections. — Can we observe fractional electric charges? Yes, we can, on domain walls.

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5 Kinks and domain walls (at the classical level)

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In this chapter we will consider a subclass of topological solitons. Let us assume that a field theory possesses a few (more than one) discrete degenerate vacuum states. A field configuration smoothly interpolating between a pair of distinct degenerate ...

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