The possibility of vacuum instability in massless λΦ4 theory is discussed by using both functional techniques and canonical quantization. A new symmetric (〈φ〉 = 0) phase exists with energy below the perturbative vacuum for each value of λ. The excitations above the new ground state can be described in terms of Bogoliubov transformation.
Vacuum Instability In Massless Lambda Phi**4 Theory
CASTORINA, PaoloPrimo
;
1983-01-01
Abstract
The possibility of vacuum instability in massless λΦ4 theory is discussed by using both functional techniques and canonical quantization. A new symmetric (〈φ〉 = 0) phase exists with energy below the perturbative vacuum for each value of λ. The excitations above the new ground state can be described in terms of Bogoliubov transformation.File in questo prodotto:
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