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Effective Theory Approach for Axion Wormholes
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Effective Theory Approach for Axion Wormholes
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We employ the effective field theory approach to analyze the characteristics of Euclidean wormholes within axion theories. Using this approach, we obtain non-perturbative instantons in various complex scalar models with and without a non-minimal coupling to gravity, as well as models featuring the $R^2$ term for a range of coupling values. This yields a series of analytical expressions for the axion wormhole action, shedding light on the model parameters and field dependencies of contributions in both the ultraviolet and infrared domains. Consequently, model-dependent local operators that disrupt axion shift symmetries are generated at lower energy levels. This, in turn, provides crucial insights into the gravitational influences on the axion quality problem.
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Cited by 1 Pith paper
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Revisiting wormhole-induced global symmetry breaking
Ensemble averaging over wormhole α-parameters is dominated by the symmetric point α=0 for spontaneously broken U(1) p-form symmetries, so standard PQ models evade the wormhole-induced axion quality problem.
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