Large n field theories, string theory and gravity o aharony, s s gubser, j maldacena, h ooguri, y oz

... orientifolds, or conifold points. In section 4.2, we review how baryons and instantons arise in the string theory 9 description. In section 4.3, we study some deformations of the CFT and how they ... physics of D3-branes in string the- ory. We define, in section 3.1, the correspondence between fields in the string theory and operators of the conformal field theory and the pre...

Ngày tải lên: 17/03/2014, 14:48

... Number One Though we do not know how to prove this in general, one can readily prove it by hand for the case of instantons of instanton number one on R 4 . The ADHM construction for such instantons, ... regularization, every classical instanton corresponds in a natural way to a supersymmetric configuration in string theory or in other words to a stringy instanton. Thus, with this regulariz...

Ngày tải lên: 17/03/2014, 14:33

... is hot enough to emit massive neutrinos and anti-neutrinos, then electrons, muons, and pions. None of these carry o baryon number. It can only begin to radiate baryons when its temperature has ... Proton fluctuations while falling through horizon This, of course, is nothing but the usual time dilation near the horizon. As a proton or any other system approaches the horizon, internal osci...

Ngày tải lên: 19/01/2014, 13:57

... the superstrings in type IIB superstring theory – can be consistently defined on spaces with vanishing first Chern number only and their dynamics is then governed by the above-mentioned Chern-Simons ... D-brane system in ten dimensional string theory and a top ological D-brane system. The analogous correspondence for the Nahm construction is also established. After concluding in the l...

Ngày tải lên: 17/03/2014, 14:36

... from the same problem as bosonic string theory — its lowest mode is a tachyon. Is the fate of RNS formulation the same as that of the bosonic string theory in 26 di- mensions? The answer is not. ... dilaton and the tachyon, it is possible to define consistent string theory not only in the spacetime of critical dimension D cr = 26. Still one can ask the question: is there any sens...

Ngày tải lên: 17/03/2014, 14:41

... Neumann and Dirichlet boundary conditions. This is one of the motivations for introducing D-bra nes. Let us now discuss the extension from the bosonic to the type II string theory. In type II theory ... introduction to black holes in supergravity and string the- ory. 2 The fo c us is on the role of BPS solutions in four- and higher-dimensional supe rgravity and in string th...

Ngày tải lên: 18/04/2014, 15:27

... on the first brane and end on the second, or begin on the second and end on the first, and this gives two additional possibilities for the excitation of the system. These four possibilities can ... and thus get a 5-brane in the Type IIA theory, then the open string cannot end on this brane, since there is no corresponding picture of such an endpoint in 11 dimensions. The physics of t...

Ngày tải lên: 18/04/2014, 15:30

... greater phase noise at the mobile set in a wireless system, as opposed to the base station, and similarly in the customer Synchronization 93 94 Synchronization terminal as opposed to the central office ... as described previously, but also to phase noise in the local oscillators involved in such modulation. Phase noise is the zero mean random process of the deviation of the oscillator&apos...

Ngày tải lên: 02/03/2013, 16:58

... chief concerns of economists and policymakers, even in the face of a clearly strengthening outlook for growth. “Lending to non-financial companies continued to contract annually, as company ... Lending to businesses falls sharply By Norma Cohen Lending to private non-financial companies fell sharply in March and at a faster pace than seen over the previous six months, a shift that .....

Ngày tải lên: 15/04/2013, 14:57

... goes unrecognized by his own society. In sum, Walzer&apos ;s philosophy of social criticism is the practice of someone from within a society positioning himself still within the society so as ... Although he recognizes that in ``a growing number of states in the world today: sensibilities and intuitions aren't readily shared,'' he does not relinquish the notion that they ......

Ngày tải lên: 24/08/2013, 20:16