Positivity vs. Lorentz-violation: an explicit example
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Publication:5061942
DOI10.1088/1475-7516/2021/10/079zbMATH Open1487.83023arXiv2107.01755OpenAlexW3209301463MaRDI QIDQ5061942
Author name not available (Why is that?)
Publication date: 14 March 2022
Published in: (Search for Journal in Brave)
Abstract: We show how a class of multi-field scalar-field theories in a Lorentz-breaking background imposes consistency conditions on its effective theory of a single field and provides an example of order-unity violation of a naively applied positivity bound, assuming a large hierarchy between the masses of the lightest field and the others.
Full work available at URL: https://arxiv.org/abs/2107.01755
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