Regular Solutions in Higher-Derivative Gravity
Local gravitational theories with more than four derivatives can have remarkable quantum properties. Namely, they can be super-renormalizable and may be unitary in the Lee-Wick sense, if the massive poles of the propagator are complex. It is important, therefore, to also explore the classical aspect...
Main Authors: | Breno L. Giacchini, Tibério de Paula Netto |
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Format: | Article |
Language: | English |
Published: |
MDPI AG
2018-12-01
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Series: | Universe |
Subjects: | |
Online Access: | https://www.mdpi.com/2218-1997/4/12/140 |
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