Journal
PHYSICS LETTERS B
Volume 659, Issue 3, Pages 694-697Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2007.11.082
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We study the Maxwell-Einstein theory in the framework of effective field theories. We show that the modified one-loop renormalizable Lagrangian due to quantum gravitational effects contains a Lee-Wick vector field as an extra degree of freedom in the theory. Thus gravity provides a natural mechanism for the emergence of this exotic particle. (c) 2007 Elsevier B.V. All rights reserved.
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