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Maldacena has used the ADM Formalism in one of his papers (http://arxiv.org/abs/astro-ph/0210603) in computing the the three point correlation function (i.e the non-Gaussianity) parameter for primordial cosmological perturbations. Can somebody explain in some more detail the relevant parts of the ADM formalism needed to do understand this calculation?

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    $\begingroup$ Can you be more specific? What are you hoping to find here that you couldn't get by searching Google for "ADM formalism"? As it is, this question is pretty vague. $\endgroup$ – David Z Apr 13 '11 at 6:17
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    $\begingroup$ Question with a huge overlap, if not an exact duplicate physics.stackexchange.com/questions/3445/… $\endgroup$ – dbrane Apr 13 '11 at 15:34
  • $\begingroup$ I mentioned about the paper of Maldacena in my question. (arxiv.org/abs/astro-ph/0210603). I need to know ADM Formalism so that I can understand whatever is said there. A results given by a simple Google search on ADM is not good enough. Either they are not enough (somewhat qualitative) or they are too difficult and assumes a lot. $\endgroup$ – Debangshu Apr 13 '11 at 20:12
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    $\begingroup$ Pretty much any standard advanced GR textbook has a chapter on ADM. $\endgroup$ – Michael Brown May 3 '13 at 4:44
  • $\begingroup$ Hi @Debangshu, if you want to understand Maldacena's calculation of these three point correlation functions, you should edit your question (or ask a new one) to primarly ask about this. It might well be that an answerer points you to some relevant reading material about the ADM formalism anyway. Good look ;-). $\endgroup$ – Dilaton May 6 '13 at 9:48

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