The effective field theory treatment of quantum gravity

Donoghue, John F.

doi:10.48550/arxiv.1209.3511

Cited by 19 publications

(35 citation statements)

References 23 publications

(43 reference statements)

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“…In order to correctly compute the correlation function it is necessary to consider modes of arbitrarily high frequencies. This is exactly what one expects when working with an effective field theory [21]. Unless this is done ultraviolet cutoff effects dominate the structure of the correlation function.…”

Section: Discussionsupporting

confidence: 69%

Hawking radiation correlations in Bose-Einstein condensates using quantum field theory in curved space

et al. 2013

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The density-density correlation function is computed for the Bogoliubov pseudoparticles created in a Bose-Einstein condensate undergoing a black hole flow. On the basis of the gravitational analogy, the method used relies only on quantum field theory in curved spacetime techniques. A comparison with the results obtained by ab initio full condensed matter calculations is given, confirming the validity of the approximation used, provided the profile of the flow varies smoothly on scales compared to the condensate healing length.

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Section: Discussionsupporting

confidence: 69%

Hawking radiation correlations in Bose-Einstein condensates using quantum field theory in curved space

et al. 2013

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“…If c 4 = 0 we can take the background geometry to be flat space, § allowing us to expand the metric around * Not all such terms need be independent of one another, making it useful in practice to identify a minimal basis of interactions of each dimension. For some reviews of gravity formulated as an EFT, see [19,336,337]. † Notice that these arguments indicate that for practical applications c (d,k) is almost certainly not of order M d Pl when d < 0, unlike the choice often made.…”

Section: General Relativity and Quantum Mechanics: An Effective Field...mentioning

confidence: 99%

“…As shown in [19,336,337] in some detail, the contribution to this amplitude of an L-loop Feynman graph built using V i,r vertices built from a term in S eff involving r powers of the curvature tensor, involving the emission or absorption of i gravitons, is of order…”

Section: General Relativity and Quantum Mechanics: An Effective Field...mentioning

confidence: 99%

Testing General Relativity with Present and Future Astrophysical Observations

Berti,

Barausse,

Cardoso

et al. 2015

Preprint

135

207

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One century after its formulation, Einstein's general relativity has made remarkable predictions and turned out to be compatible with all experimental tests. Most of these tests probe the theory in the weak-field regime, and there are theoretical and experimental reasons to believe that general relativity should be modified when gravitational fields are strong and spacetime curvature is large. The best astrophysical laboratories to probe strong-field gravity are black holes and neutron stars, whether isolated or in binary systems. We review the motivations to consider extensions of general relativity. We present a (necessarily incomplete) catalog of modified theories of gravity for which strong-field predictions have been computed and contrasted to Einstein's theory, and we summarize our current understanding of the structure and dynamics of compact objects in these theories. We discuss current bounds on modified gravity from binary pulsar and cosmological observations, and we highlight the potential of future gravitational wave measurements to inform us on the behavior of gravity in the strong-field regime.

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“…For q R = 1, the transposed matrix has a block-diagonal structure and the eigenvalues could be given analytically. 1 To have a well-defined states like (46) and effective quantum field theory in de Sitter space, the modes with the largest values of k must be chosen leads to a 4th order adiabatic state [53].…”

Section: B Bosonic Entanglementmentioning

confidence: 99%

Probing Planckian physics in de Sitter space with quantum correlations

et al. 2014

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We study the quantum correlation and quantum communication channel of both free scalar and fermionic fields in de Sitter space, while the Planckian modification presented by the choice of a particular $\alpha$-vacuum has been considered. We show that the occurrence of degradation of quantum entanglement between field modes for an inertial observer in curved space, due to the radiation associated with its cosmological horizon. Comparing with standard Bunch-Davies choice, the possible Planckian physics causes some extra decrement on the quantum correlation, which may provide the means to detect quantum gravitational effects via quantum information methodology in future. Beyond single-mode approximation, we construct proper Unruh modes admitting general $\alpha-$vacua, and find a convergent feature of both bosonic and fermionic entanglements. In particular, we show that the convergent points of fermionic entanglement negativity are dependent on the choice of $\alpha$. Moreover, an one-to-one correspondence between convergent points $H_c$ of negativity and zeros of quantum capacity of quantum channels in de Sitter space has been proved.Comment: 25 pages, 7 figures, replaced to match the published versio

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The effective field theory treatment of quantum gravity

Cited by 19 publications

References 23 publications

Hawking radiation correlations in Bose-Einstein condensates using quantum field theory in curved space

Hawking radiation correlations in Bose-Einstein condensates using quantum field theory in curved space

Testing General Relativity with Present and Future Astrophysical Observations

Probing Planckian physics in de Sitter space with quantum correlations

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