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

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.

17 pages, 16 figures, 3 tables

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Cited by in corpus (10)

• Detecting a long lived false vacuum with quantum quenches
• Stirring the false vacuum via interacting quantized bubbles on a 5564-qubit quantum annealer
• Monte Carlo matrix-product-state approach to the false vacuum decay in the monitored quantum Ising chain
• False vacuum decay and nucleation dynamics in neutral atom systems
• Theory of metastable states in many-body quantum systems
• Enhancing Quantum Field Theory Simulations on NISQ Devices with Hamiltonian Truncation
• Ising Meson Spectroscopy on a Noisy Digital Quantum Simulator
• Escaping fronts in local quenches of a confining spin chain
• Probing False Vacuum Decay and Bubble Nucleation in a Rydberg Atom Array
• Confinement and false vacuum decay on the Potts quantum spin chain