We study the decay of the false vacuum in the scaling Ising and tricritical Ising field theories using the truncated conformal space approach and compare the numerical results to theoretical predictions in the thin wall limit. In the Ising case, the results are consistent with previous studies on the quantum spin chain and the phi 4 quantum field theory; in particular, we confirm that while the theoretical predictions get the dependence of the bubble nucleation rate on the latent heat right, they are off by a model-dependent overall coefficient. The tricritical Ising model allows us on the other hand to examine more exotic vacuum degeneracy structures, such as three vacua or two asymmetric vacua, which leads us to study several novel scenarios of false vacuum decay by lifting the vacuum degeneracy using different perturbations.

Variations on vacuum decay: The scaling Ising and tricritical Ising field theories / Lencsés, M; Mussardo, G.; Takács, G.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 106:10(2022), pp. 1-18. [10.1103/physrevd.106.105003]

Variations on vacuum decay: The scaling Ising and tricritical Ising field theories

Mussardo, G.;
2022-01-01

Abstract

We study the decay of the false vacuum in the scaling Ising and tricritical Ising field theories using the truncated conformal space approach and compare the numerical results to theoretical predictions in the thin wall limit. In the Ising case, the results are consistent with previous studies on the quantum spin chain and the phi 4 quantum field theory; in particular, we confirm that while the theoretical predictions get the dependence of the bubble nucleation rate on the latent heat right, they are off by a model-dependent overall coefficient. The tricritical Ising model allows us on the other hand to examine more exotic vacuum degeneracy structures, such as three vacua or two asymmetric vacua, which leads us to study several novel scenarios of false vacuum decay by lifting the vacuum degeneracy using different perturbations.
2022
106
10
1
18
105003
10.1103/physrevd.106.105003
https://arxiv.org/abs/2208.02273
Lencsés, M; Mussardo, G.; Takács, G.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/131951
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