Physical sciences topic list of research papers
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Superstring measure and non-renormalization of the three-point amplitude
Abstract We show that a recently conjectured expression for the superstring three-point amplitude, in the framework of the Cacciatori, Dalla Piazza, van Geemen–Grushevsky ansatz for the chiral measure, fails to vanish at three-loop, in contrast with ...
2008 / Marco Matone, Roberto Volpato -
D7-brane motion from M-theory cycles and obstructions in the weak coupling limit
Abstract Motivated by the desire to do proper model building with D7-branes and fluxes, we study the motion of D7-branes on a Calabi–Yau orientifold from the perspective of F-theory. We consider this approach promising since, by working effectively...
2008 / A.P. Braun, A. Hebecker, H. Triendl -
Deep inelastic inclusive and diffractive scattering at values from 25 to 320 GeV2 with the ZEUS forward plug calorimeter
Abstract Deep inelastic scattering and its diffractive component, e p → e ′ ...
2008 / S. Chekanov, M. Derrick, S. Magill, B. Musgrave, D. Nicholass, et al. -
Correlated electron-ion dynamics in metallic systems
Abstract In this paper we briefly discuss the problem of simulating non-adiabatic processes in systems that are usefully modelled using molecular dynamics. In particular we address the problems associated with metals, and describe two methods that...
2008 / A.P. Horsfield, M. Finnis, M. Foulkes, J. LePage, D. Mason, et al. -
Risk Mitigation for ITER by a Prolonged and Joint International Operation of JET2015 / A. J. H. Donné, S. Cowley, T. Jones, X. Litaudon
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Two stochastic models of a random walk in the U(n)-spherical duals of U(n + 1)2011 / F. A. Grünbaum, I. Pacharoni, J. Tirao
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CP violation versus flavour in supersymmetric theories
Abstract We show that the quark flavour structure and CP violating phenomena are strongly correlated in supersymmetric theories. For a generic pattern of supersymmetry breaking the two broad categories of Yukawa couplings, democratic and...
2003 / S. Abel, G.C. Branco, S. Khalil -
Development of ultrasound focusing discrete array for air-coupled ultrasound generation
Abstract The technique and results of synthesis of ultrasound focusing discrete arrays for air-coupled ultrasound generation are presented. One of the arrays is an antenna 22 cm in diameter. It consists of 60 transmitters of Murata Company. The...
2010 / Alexander I. Korobov, Maria Y. Izosimova, Sergey A. Toschov -
Magnetic strings in Einstein–Born–Infeld-dilaton gravity
Abstract A class of spinning magnetic string in 4-dimensional Einstein-dilaton gravity with Liouville type potential which produces a longitudinal nonlinear electromagnetic field is presented. These solutions have no curvature singularity and no...
2007 / M.H. Dehghani, A. Sheykhi, S.H. Hendi -
Maxwell–Chern–Simons theory is free for marginally noncommutative spacetimes
Abstract We have conclusively established the duality between noncommutative Maxwell–Chern–Simons theory and self-dual model, the latter in ordinary spacetime, to the first nontrivial order in the noncommutativity parameter θ ...
2004 / Subir Ghosh -
Measure in the 2D Regge quantum gravity
Abstract We propose a version of the 2D Regge calculus, in which the areas of all triangles are equal to each other. In this discretization Lund–Regge measure over link lengths is simplified considerably. Contrary to the usual Regge models with...
2005 / M.A. Zubkov -
Large mass expansion of quasi-normal modes in AdS5
Abstract We calculate analytically the asymptotic form of quasi-normal frequencies for massive scalar perturbations of large black holes in AdS5. We solve the wave equation, which reduces to a Heun equation, perturbatively and calculate the...
2004 / George Siopsis -
PAMELA satellite data as a signal of non-thermal wino LSP dark matter
Abstract Satellite and astrophysical data is accumulating that suggests and constrains interpretations of the dark matter of the universe. We argue there is a very well motivated theoretical framework (which existed before data) consistent with the...
2009 / Gordon Kane, Ran Lu, Scott Watson -
Non-cyclic phases for neutrino oscillations in quantum field theory
Abstract We show the presence of non-cyclic phases for oscillating neutrinos in the context of quantum field theory. Such phases carry information about the non-perturbative vacuum structure associated with the field mixing. By subtracting the...
2009 / Massimo Blasone, Antonio Capolupo, Enrico Celeghini, Giuseppe Vitiello -
Quark–gluon antenna functions from neutralino decay
Abstract The computation of exclusive QCD jet observables at higher orders requires a method for the subtraction of infrared singular configurations arising from multiple radiation of real partons. One commonly used method at next-to-leading order...
2005 / A. Gehrmann-De Ridder, T. Gehrmann, E.W.N. Glover -
Implication on Higgs invisible width in light of the new CDMS result
Abstract With the assumption that the dominant diagram in supersymmetry for the spin-independent cross section of the dark matter particle is due to Higgs boson exchange, we obtain an upper limit on the Higgs-dark-matter coupling based on the new...
2010 / Kingman Cheung, Tzu-Chiang Yuan -
Implications of Dark Matter direct detection results on LHC physics
Abstract The requirements of electroweak symmetry breaking (EWSB) and correct thermal relic density of Dark Matter (DM) predict large DM spin-independent direct detection cross section in scalar DM models based on SO ...
2010 / Mario Kadastik, Kristjan Kannike, Antonio Racioppi, Martti Raidal -
Quark orbital angular momentum in the Wandzura–Wilczek approximation
Abstract We show that quark orbital angular momentum is directly related to off-forward correlation functions which include intrinsic transverse momentum corresponding to a derivative with respect to the transverse coordinates. Its possible...
2004 / Ph. Hägler, A. Mukherjee, A. Schäfer -
Some thoughts about matrix coordinate transformations
Abstract Matrix coordinate transformations are defined as substitution operators without requiring an ordering prescription or an inclusion function from the Abelian coordinate transformations. We construct transforming objects mimicking most of the ...
2008 / Joke Adam, Bert Janssen, Walter Troost, Walter Van Herck -
Spinor moving frame, M0-brane covariant BRST quantization and intrinsic complexity of the pure spinor approach
Abstract To exhibit the possible origin of the inner complexity of the Berkovits's pure spinor approach, we consider the covariant BRST quantization of the D = 11 ...
2007 / Igor A. Bandos