In this talk we discuss an elementary derivation of the semi-classical spectrum of neutral particles in two field theories with kink excitations. We also show that, in the non-integrable cases, each vacuum state cannot generically support more than two stable particles, since all other neutral excitations are resonances, which will eventually decay.
Kinks and particles in non-integrable quantum field theories / Mussardo, Giuseppe. - (2009), pp. 509-523. (Intervento presentato al convegno 15th International Congress of Mathematical Physics tenutosi a Rio de Janeiro nel Luglio 2006) [10.1007/978-90-481-2810-5_34].
Kinks and particles in non-integrable quantum field theories
Mussardo, Giuseppe
2009-01-01
Abstract
In this talk we discuss an elementary derivation of the semi-classical spectrum of neutral particles in two field theories with kink excitations. We also show that, in the non-integrable cases, each vacuum state cannot generically support more than two stable particles, since all other neutral excitations are resonances, which will eventually decay.File in questo prodotto:
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