Regularization of Vacuum Fluctuations and Frame Dependence
classification
✦ hep-th
gr-qchep-ph
keywords
vacuumcovariancefluctuationsgeneralregularizationsymmetrybackgroundbroken
read the original abstract
We discuss the regularization of vacuum fluctuations in a gravitational background. It is shown that general covariance is broken even by a 4-momentum cut-off, consistent with Lorentzian symmetry. It is pointed out that general covariance is a protective symmetry for the vacuum energy from power divergences.
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