IAG ring test animal proteins 2017

Raamsdonk, L.W.D. van; Smits, C.; Vliege, J.J.M.; Pinckaers, V.G.Z.

doi:10.18174/431755

Cited by 5 publications

(10 citation statements)

References 1 publication

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“…For notational simplicity we won't do so here, but all our calculations work the same way for other primary operators. 1 In holographic theories, this state deformation is dual to coherent excitations of the bulk gravitons. The state perturbations in the CFT then translate to a gravitational perturbation theory of the form g = g (0)…”

Section: Setupmentioning

confidence: 99%

“…The Einstein equations, E ab − 1 2 T ab = 0, can be expanded in a similar way; δ (2) T ab will be quadratic in δg (1) and therefore allows us to study gravitational backreaction.…”

Section: Setupmentioning

confidence: 99%

“…For a perturbation δg (1) = γ in this gauge, we have the following generalization of the second order identity of [12]:…”

Section: A Second Order Perturbationsmentioning

confidence: 99%

“…It has been known for some time that the emergence of a connected spacetime with local dynamics in holographic conformal field theories is intimately related to quantum entanglement [1,2]. It has been understood that state dependence of relative entropy can be used to derive linearized [3] and non-linear [4] Einstein equations.…”

Section: Introductionmentioning

confidence: 99%

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Higher Curvature Gravity from Entanglement in Conformal Field Theories

et al. 2018

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By generalizing different recent works to the context of higher curvature gravity, we provide a unifying framework for three related results: (i) If an asymptotically anti-de Sitter (AdS) spacetime computes the entanglement entropies of ball-shaped regions in a conformal field theory using a generalized Ryu-Takayanagi formula up to second order in state deformations around the vacuum, then the spacetime satisfies the correct gravitational equations of motion up to second order around the AdS background. (ii) The holographic dual of entanglement entropy in higher curvature theories of gravity is given by the Wald entropy plus a particular correction term involving extrinsic curvatures. (iii) Conformal field theory relative entropy is dual to gravitational canonical energy (also in higher curvature theories of gravity). Especially for the second point, our novel derivation of this previously known statement does not involve the Euclidean replica trick.

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Section: Setupmentioning

confidence: 99%

“…The Einstein equations, E ab − 1 2 T ab = 0, can be expanded in a similar way; δ (2) T ab will be quadratic in δg (1) and therefore allows us to study gravitational backreaction.…”

Section: Setupmentioning

confidence: 99%

“…For a perturbation δg (1) = γ in this gauge, we have the following generalization of the second order identity of [12]:…”

Section: A Second Order Perturbationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Higher Curvature Gravity from Entanglement in Conformal Field Theories

et al. 2018

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“…In general, the application of a threshold and considering results below that threshold as negative will result in all cases in higher scores for specificity and in lower scores for sensitivity (Table 4; van Raamsdonk et al, 2014: Table 4; van Raamsdonk et al, 2015: Tables 3 and 5). One or a few wrongly recognised particles results in false positives, which is a specificity problem and using a threshold would give the positive effect of limiting this number of false positives.…”

Section: Specificity and Sensitivitymentioning

confidence: 99%

IAG ring test animal proteins 2016

Raamsdonk

Rhee

Scholtens-Toma

et al. 2016

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MicroscopyAll participants were requested to determine the presence or absence of land animal and/or fish, to indicate the type of material found and the method used.Incorrect positive results (positive deviations) were expressed in a specificity score and incorrect negative results (negative deviations) were expressed in a sensitivity score. An optimal score is 1.0.The results are analysed in two ways: numbers below threshold (between 1 and 5 particles per determination cycle inclusive) have been considered positive and as alternative considered as negative. By comparing both ways of analysis it is possible on one hand to compare the results with those from previous ring trials (there these numbers were considered positive based on the legal principle of zero tolerance), and on the other hand to compare it to the official method (where numbers between 1 and 5 are considered negative).Most of the specificity and sensitivity scores for microscopy were at good or reasonable levels. In the combination of fish meal (0.1%) and ruminant MBM (0.1%) the detection of fish material was sub optimal. Considering numbers of particles below threshold as negative, the sensitivity scores show a considerable drop. The results indicate that the overall performance of the microscopic method is satisfactory, but applicants of the microscopic method could benefit from good and effective training and documentation in order to achieve a higher reliability in identifying particles. PCRThe specificity (samples A and B) and sensitivity (samples C and D) scores for PCR were between 0.87 and 0.91. Combined scenarios for microscopy and PCR.Several participants applied incorrect numbers of determination cycles, either too many or too less.The scenarios for correct combination of microscopy and/or PCR are published in an accompanying SOP. Several deviations from these scenarios were applied, such as examination by PCR of the terrestrial animal feeds, reporting the presence of fish in the fish feeds, and the absence of a final conclusion combining the results of both methods where appropriate. It is, however, a very good situation to have all (intermediate) results reported for each of the two methods in order to have a good documentation in the framework of a ring test.

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No simple dual to the causal holographic information?

Engelhardt

Wall

2017

J. High Energ. Phys.

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In AdS/CFT, the fine grained entropy of a boundary region is dual to the area of an extremal surface X in the bulk. It has been proposed that the area of a certain 'causal surface' C-i.e. the 'causal holographic information' (CHI)corresponds to some coarse-grained entropy in the boundary theory. We construct two kinds of counterexamples that rule out various possible duals, using (1) vacuum rigidity and (2) thermal quenches. This includes the 'one-point entropy' proposed by Kelly and Wall, and a large class of related procedures. Also, any coarse-graining that fixes the geometry of the bulk 'causal wedge' bounded by C, fails to reproduce CHI. This is in sharp contrast to the holographic entanglement entropy, where the area of the extremal surface X measures the same information that is found in the 'entanglement wedge' bounded by X.

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IAG ring test animal proteins 2017

Cited by 5 publications

References 1 publication

Higher Curvature Gravity from Entanglement in Conformal Field Theories

Higher Curvature Gravity from Entanglement in Conformal Field Theories

IAG ring test animal proteins 2016

No simple dual to the causal holographic information?

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