نتایج جستجو برای: cft column
تعداد نتایج: 79299 فیلتر نتایج به سال:
We discuss the relationship between the bulk-boundary correspondence in Rehren’s algebraic holography (and in other ‘fixed-background’, QFT-based, approaches to holography) and in mainstream string-theoretic ‘Maldacena AdS/CFT’. Especially, we contrast the understanding of black-hole entropy from the point of view of QFT in curved spacetime – in the framework of ’t Hooft’s ‘brick wall’ model – ...
Automation is an essential component in todays semiconductor manufacturing As factories migrate to 300 mm technology, automated handling becomes increasingly important for variety of ergonomic, safety, and yield considerations. Traditional semiconductor AMHS systems, such as the Overhead Monorail Vehicles (OMV) or Overhead Hoist, can be overly expensive. Cost projections for a 300mm inter/intr...
We tested the hypothesis that increased hemodynamic augmentation and mechanical performance could be achieved by using a variable frequency pulse train (VFT) to stimulate the latissimus dorsi muscle (LDM), compared to the conventional constant frequency pulse train (CFT) used in cardiomyoplasty. In dogs (n = 6), a vascular delayed LDM was wrapped posteriorly around the heart. LDM was conditione...
Using the general framework developed in hep-th/0607056, we study in detail the phase space of BPS Black Holes in AdS, for the case where all three electric charges are equal. Although these solitons are supersymmetric with zero Hawking temperature, it turns out that these Black Holes have rich phase structure with sharp phase transitions associated to a corresponding critical generalized tempe...
We investigate the pp-wave limit of the AdS3 × S ×K3 compactification of Type IIB string theory from the point of view of the dual SymN(K3) CFT. It is proposed that a fundamental string in this pp-wave geometry is dual to the c = 6 effective string of the SymN(K3) CFT, with the string bits of the latter being composed of twist operators. The massive fundamental string oscillators correspond to ...
We discuss some aspects of the recently discovered BPS black ring solutions in terms of the AdS/CFT correspondence. In the type IIB frame in which the black ring carries the charges of the D1-D5-P system, we propose a microscopic description of the rings in the orbifold CFT governing this system. In our proposal, the CFT effectively splits into two parts: one part captures the supertube-like pr...
We describe the quasi-static collapse of a radiating, spherical shell of matter in de Sitter space-time using a thermodynamical formalism. It is found that the specific heat at constant area and other thermodynamical quantities exhibit singularities related to phase transitions during the collapse. Because of the paradigm of inflation, de Sitter space-time has recently become the subject of gre...
In the AdS/CFT correspondence, correlation functions of conformal fields are related to amplitudes of a quantum theory in AdS [1 – 3] (for a review, see for example [4]). Since the conformal group of the boundary and the isometry group of AdS are identical, correlation functions defined in this way are conformally symmetric. However not all quantum theories in AdS can be related to CFT at the b...
The attempt to understand if AdS/CFT correspondence may be realized as the one between some AdS-like cosmological space and CFT living on the boundary is made. In order to obtain such cosmology we exchange the time and radial coordinates in d5 Schwarzschild-anti de Sitter (S-AdS) BH (with corresponding signature change). The test on proportionality of free energies from such d5 cosmological spa...
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