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arxiv: 0705.3287 · v2 · submitted 2007-05-23 · ✦ hep-ph · hep-th

The Lee-Wick Fields out of Gravity

classification ✦ hep-ph hep-th
keywords fieldgravitylee-wicktheorycontainsdegreeeffectiveeffects
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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.

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