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arXiv 2011.12929hep-thgr-qcquant-ph
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Resonant particle creation by a time-dependent potential in a nonlocal theory

Jens Boos, Valeri P. Frolov, Andrei Zelnikov

英文摘要:

Considering an exactly solvable local quantum theory of a scalar field interacting with a $δ$-shaped time-dependent potential we calculate the Bogoliubov coefficients analytically and determine the spectrum of created particles. We then show how these considerations, when suitably generalized to a specific nonlocal "infinite-derivative" quantum theory, are impacted by the presence of nonlocality. In this model, nonlocality leads to a significant resonant amplification of certain modes, leaving its imprint not only in the particle spectrum but also in the total number density of created particles.

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