The scattering of gravitons in string theory can also be computed from the correlation functions in conformal field theory, as dictated by the AdS / CFT correspondence, or from Matrix theory.

The most rigorous realization of the holographic principle is the AdS / CFT correspondence by Juan Maldacena.

* AdS / CFT correspondence

Modern variants include the AdS / CFT approach.

In this sense, string perturbation theory exhibits exactly the features one would expect of a perturbation theory that may exhibit a strong dependence on asymptotics ( as seen, for example, in the AdS / CFT correspondence ) which is a weak form of background dependence.

In 1997, Juan Maldacena formulated a result establishing a relationship between gauge theories and a theory of gravity commonly known as AdS / CFT correspondence.

However, according to the conjectured gauge-gravity duality ( also known as the AdS / CFT correspondence ), black holes in certain cases ( and perhaps in general ) are equivalent to solutions of quantum field theory at a non-zero temperature.

* AdS / CFT correspondence, ( anti de Sitter / conformal field theory correspondence ), sometimes called the Maldacena duality

Hawking's semi-classical argument is reproduced in a quantum mechanical AdS / CFT treatment, where a black hole in anti-de Sitter space is described by a thermal gas in a gauge theory, whose time reversal is the same as itself.

* AdS / CFT correspondence

It is best known for its role in the AdS / CFT correspondence.

The AdS / CFT ( anti de Sitter space / conformal field theory ) correspondence is an idea originally proposed by Juan Maldacena in late 1997.

The AdS / CFT correspondence is the idea that it is possible in general to describe a force in quantum mechanics ( like electromagnetism, the weak force or the strong force ) in a certain number of dimensions ( for example four ) with a string theory where the strings exist in an anti de Sitter space, with one additional dimension.

The AdS / CFT correspondence is notable because it is not obvious that quantum field theories can be represented geometrically.

This is called the AdS / CFT correspondence.

AdS / CFT correspondence: Einstein metrics and their conformal boundaries, 205 -- 216, IRMA Lect.

Though not yet fully understood in general, the holographic principle is central to theories like the AdS / CFT correspondence.

Higher-dimensional conformal field theories are prominent in the AdS / CFT correspondence, in which a gravitational theory in anti de Sitter space ( AdS ) is equivalent to a conformal field theory on the AdS boundary.

* AdS / CFT correspondence

Among his many discoveries, the most famous one is the most reliable realization of the holographic principle-namely the AdS / CFT correspondence, the conjecture about the equivalence of string theory on Anti de Sitter ( AdS ) space, and a conformal field theory defined on the boundary of the AdS space.

: For the relation of the AdS / CFT correspondence to the general context of string theory, see String theory.

In physics, the AdS / CFT correspondence ( anti de Sitter / conformal field theory correspondence ), sometimes called the Maldacena duality, is the conjectured equivalence between a string theory and gravity defined on one space, and a quantum field theory without gravity defined on the conformal boundary of this space, whose dimension is lower by one or more.

Today, many physicists believe that the holographic principle ( specifically the AdS / CFT duality ) demonstrates that Hawking's conclusion was incorrect, and that information is in fact preserved.

The green shaded region in the interior corresponds to the region of AdS covered by the half-space coordinates and it is bounded by two null, aka lightlike, geodesic hyperplanes ; the green shaded area on the surface corresponds to the region of conformal space covered by Minkowski space.

However, the original papers of H. Năstase and the New Scientist article cited by the BBC state that the correspondence of the hot dense QCD matter created in RHIC to a black hole is only in the sense of a correspondence of QCD scattering in Minkowski space and scattering in the AdS < sub > 5 </ sub > × X < sub > 5 </ sub > space in AdS / CFT ; in other words, it is similar mathematically.

Therefore, RHIC collisions might be described by mathematics relevant to theories of quantum gravity within AdS / CFT, but the described physical phenomena are not the same.

One of his well-known work in AdS / CFT were the duality between strings on pp-wave spacetime and BMN operators in supersymmetric Yang-Mills theory, together with David Berenstein and Juan Maldacena in 2002.

This is at least in superficial contradiction to the more well known Maldacena duality, the AdS / CFT correspondence.

Since the 1997 proposal of the AdS / CFT correspondence, the predominant belief among physicists is that information is preserved and that Hawking radiation is not precisely thermal but receives quantum corrections.

Developments in AdS / CFT correspondence after 1997 suggest that the microphysical degrees of freedom in induced gravity might be radically different.

In AdS space time is periodic, and the universal cover has non-periodic time.

Because the conformal infinity of AdS is timelike, specifying the initial data on a spacelike hypersurface would not determine the future evolution uniquely ( i. e. deterministically ) unless there are boundary conditions associated with the conformal infinity.

The green shaded region covers half of the AdS space and half of the conformal spacetime ; the left ends of the green discs will touch in the same fashion as the right ends.

An example of correspondence theory is the statement by the Thirteenth Century philosopher / theologian Thomas Aquinas: Veritas est adaequatio rei et intellectus (" Truth is the equation adequation of things and intellect "), a statement which Aquinas attributed to the Ninth Century neoplatonist Isaac Israeli.

According to a survey of professional philosophers and others on their philosophical views which was carried out in November 2009 ( taken by 3226 respondents, including 1803 philosophy faculty members and / or PhDs and 829 philosophy graduate students ) 44. 9 % of respondents accept or lean towards correspondence theories, 20. 7 % accept or lean towards deflationary theories and 13. 8 % epistemic theories.

These modes share many properties, such as synchronization and / or frequencies and grey / color level correspondence.

Evolution Publishing, ISBN 978-1-889758-88-6. http :// www. evolpub. com / CRE / CREseries. html # CRE5 — includes an account of the exile and death of Nestorius, along with correspondence purportedly written by Nestorius to Theodosius II.

Suspecting that Allende / Allen was a fraud, Jessup discontinued the correspondence.

Their correspondence of 1840 / 41 reveals that they were both outlining scenarios for an opera on the subject of the Nibelungenlied: Fanny wrote ' The hunt with Siegfried's death provides a splendid finale to the second act '.

He exchanged public correspondence with George Orwell defending pacifism in the open letter / poem " Letter to an American Visitor " under the pseudonym " Obadiah Hornbrooke.

In one study, created to investigate the correspondence between perceived meanings of smiles and their morphological and dynamic characteristics, it was found that “ perceived embarrassed / nervous smiles had greater amplitude, longer duration … related to those perceived as polite .” Work by John Gottman has shown that smiling and other such expressions of positive emotions are important to shaping relationships with others ; researchers could predict the quality of marriages many years into the future based on the number of such interactions ( see also agreeableness ).

His correspondence with Heinse was published in 2 vols ( 1894 / 1896 ), with Uz ( 1889 ), in both cases edited by C. Schüddekopf.

Traditional postal chess organizations such as the International Correspondence Chess Association, the Correspondence Chess League of America ( CCLA ), and the United States Chess Federation ( USCF ) have added email and / or server-based options to their correspondence play.

But the Agatha Christie / Edmund Cork and Harold Ober literary correspondence files, currently held at Exeter University in Devon, indicate Sleeping Murder was written early in 1940.

There have been claims made that the novel was in fact written by Craig Rice but others have suggested that there is enough documented evidence in the form of manuscripts and correspondence to prove Lee wrote at least a large portion if not the whole of the novel herself under the tutelage of editor / friend George Davis with some essential guidance from her good friend Rice.