6-loop anomalous dimension of a single impurity operator from AdS/CFT and multiple zeta values

Anomalous dimension of the simplest nontrivial single impurity operator in the beta=1/2 deformed theory is determined at six loops from the AdS/CFT correspondence. L\"uscher correction is evaluated at next-to-next-to-leading order (NNLO) in terms of multiple zeta values. The result can be simplified into the products of simple zeta functions and the same form of the correction is expected for the Konishi operator at six loops, too.Comment: 14 pages, references added, numeric coefficient in (5) corrected, which changes the numerical result, but not its structur

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Interview with Noor Al Marestan

Discrete physical states and correction terms in the Supersymmetric c=1 Model of String Theory

In this work, we explore the example of supersymmetric c=1 model which is one of the simplest models of superstrings, with an elegant and transparent spectrum of physical states. We show how the presence of the ghost cohomologies enlarges the spectrum of states and leads to new intriguing symmetries of the theory and possibly leads to nontrivial relations of two-dimensional supergravity with physical theories in higher dimensions. We develop a general prescription for constructing the BRST-invariant and nontrivial vertex operators and we explicitly compute correction terms that restore BRST invariance of their corresponding currents.Comment: 15 pages. arXiv admin note: substantial text overlap with arXiv:hep-th/0602209, arXiv:hep-th/0701044 by other author

An Innovative Cardiac Biomarker in Veterinary Medicine

In the past, there were many traditional methods for detection of cardiac injury. These methods includes electrocardiography, echocardiography in association with certain cardiac biomarkers. The serum levels of aspartate aminotransferase (AST), creatin kinase (CK), and lactate dehydrogenase (LDH) were formerly used as cardiac biomarkers until the identification of creatine kinase myocardial band (CK-MB), LDH-1 and LDH-2 isomers, which are more specific to cardiac and muscle injury. Recently these enzymes were discovered to be lack of sensitivity and specificity in the presence of either cardiac or muscle injury in human or animals

Response Of Cable Roofs To Wind

A nonlinear solution is formulated for a single hanging cable and flat rectangular and circular cable roofs under the effect of the initial tension and the applied loads. The solution is based on a small strain large displacement theory.;The linear deflection of a curved tension roof under additional static loads is studied using the assumption that the deflection under these additional loads is small with respect to that under the initial loads. Approximate analytical solutions for the initial and additional deflections are obtained.;The linear undamped free vibration problem of a flat cable tension roof with any boundary is considered using the assumption that an orthogonal, isotropic network can be replaced by an equivalent membrane found by energy considerations. Free vibration is solved for rectangular, circular and elliptical boundaries. For the elliptical flat cable roof, a simplified solution, very well suited for practical applications, is derived.;The partial differential equation of free undamped vibration of a general curved membrane surface is formulated and solved, with some simplifications, for a rectangular hyperbolic paraboloid cable roof. The general solution outlined above is extended to include the case of the circular hyperbolic paraboloid cable roof.;The problem of a free vibrating membrane backed by a cavity with openings is theoretically studied and complemented by experimental verification of the theory. Theoretical and experimental values for frequency reduction due to inertia are given.;The statistical theory of wind forces is reviewed and applied to determine the dynamic response of cable roofs to wind loading. The problem of air-structure interaction is outlined and parameters for the aerodynamic and acoustical damping ratio are described. The behaviour of cable roofs in turbulent wind is studied in the wind tunnel using two aeroelastic models. The similarity requirements for modelling are reviewed with special attention being paid to the effect of the air enclosed under the roof. A similarity law for the modelling of this enclosure is presented and its role in free vibration as well as wind induced vibration is investigated. A wind tunnel study of a large tension roof is described.;The design implications of cable tension roof behaviour under turbulent wind load are discussed