Computer Science
Scientific paper
Nov 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006gregr..38.1547p&link_type=abstract
General Relativity and Gravitation, Volume 38, Issue 11, pp.1547-1552
Computer Science
6
Scientific paper
Principle of equivalence, general covariance and the demand that the variation of the action functional should be well defined, lead to a generic Lagrangian for semiclassical gravity of the form L=Q_a^{phantom{a}bcd}R^a_{phantom{a}bcd} with nabla_b Q_a^{phantom{a}bcd}=0. The expansion of Q_a^{phantom{a}bcd} in terms of the derivatives of the metric tensor determines the structure of the theory uniquely. The zeroth order term gives the Einstein Hilbert action and the first order correction is given by the Gauss Bonnet action. Remarkably, any such Lagrangian can be decomposed into a surface and bulk terms which are related holographically. The equations of motion can be obtained purely from a surface term in the gravity sector and hence gravity does not respond to the changes in the bulk vacuum energy density.
No associations
LandOfFree
Gravity's immunity from vacuum: the holographic structure of semiclassical action does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Gravity's immunity from vacuum: the holographic structure of semiclassical action, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gravity's immunity from vacuum: the holographic structure of semiclassical action will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1315885