Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 5, Pages 1-24Publisher
SPRINGER
DOI: 10.1007/JHEP05(2015)118
Keywords
Anomalies in Field and String Theories; Scattering Amplitudes
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Funding
- Division Of Physics
- Direct For Mathematical & Physical Scien [1520292] Funding Source: National Science Foundation
- Division Of Physics
- Direct For Mathematical & Physical Scien [1205986] Funding Source: National Science Foundation
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We discuss the derivation of the trace anomaly using a non-local effective action at one loop. This provides a simple and instructive form and emphasizes infrared physics. We then use this example to explore several of the properties of non-local actions, including displaying the action for the full non-local energy-momentum tensor. As an application, we show that the long-distance corrections at one loop lead to quantum violations of some classical consequences of the equivalence principle, for example producing a frequency dependence of the gravitational bending of light.
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