As shown in [hep-th/0406065], there exists a noncommutative deformation of the sine-Gordon model which remains (classically) integrable but features a second scalar field. We employ the dressing method (adapted to the Moyal-deformed situation) for constructing the deformed kinkantikink and breather configurations. Explicit results and plots are presented for the leading noncommutativity correct...

When the examination of Gordon began on January 17, 1929, I was far more interested in comparing his responses with those of his previous examination in July, 1928, than in observing the boy himself. This attitude may be explained by the fact that he is none too attractive a youngster either in appearance or in personality. Even a first impression of that protruding jaw and those thick shapeles...

Ralph Stanton was born in Ontario, Canada, on the anniversary of the Battle of Trafalgar, and he died in St Boniface hospital in Winnipeg, at the age of 86. He preferred a simple life, content with a shelf of good books, his stamp collection, a little good food, congenial company, and an interesting problem on which to work. Stanton graduated with a PhD in Mathematics in 1949, and began his tea...

Tables show the results of the classifiers for the SFM and the FFDM datasets using a 10-fold crossvalidation and the complete dataset, with 20 features selected by the inter/intra cluster criteria and with 20 features of the PCA. Noelia Vállez1,2, Gloria Bueno1, Oscar Déniz-Suárez1, José A. Seoane2, Julián Dorado2, and Alejandro Pazos2 1 VISILAB, E.T.S.I.I, Universidad de Castilla-La Mancha, Sp...

The purpose of this paper is to challenge some of the cornerstones of Grounded theory and propose an extended alternative approach for data analysis and theory development, which we call multi-grounded theory (MGT). A multi-grounded theory is not only empirically grounded. Three different grounding processes are acknowledged: Theoretical, empirical and internal grounding. We go beyond the pure ...

Female students are strongly under represented in courses offered by the School of Computing at Curtin University of Technology. Recruitment of female students becomes an issue not only under equity concerns, but because retention within the School is higher than recruitment numbers warrant. In order to gain an insight into the background of a successful female computing student, at the end of ...

Using the recently obtained exact results for the expectation values of operators in the sineand sinh-Gordon models [A. B. Zamolodchikov and S. Lukyanov, Nucl. Phys. B493, 571 (1997), V. Fateev, S. Lukyanov, A. B. Zamolodchikov and Al. B. Zamolodchikov, Phys. Lett. B406, 83 (1997)] we calculate the specific heat of the corresponding two dimensional Euclidean (classical) models. We show that the...

It is known that if any prime power branched cyclic cover of a knot in S is a homology sphere, then the knot has vanishing Casson-Gordon invariants. We construct infinitely many examples of (topologically) non-slice knots in S whose prime power branched cyclic covers are homology spheres. We show that these knots generate an infinite rank subgroup of F(1.0)/F(1.5) for which Casson-Gordon invari...

Ji Chen,1,2,3 Andrea Zen,1,2,3 Jan Gerit Brandenburg,2,3,4 Dario Alfè,1,2,3,5 and Angelos Michaelides1,2,3,* 1Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom 2London Centre for Nanotechnology, 17-19 Gordon Street, London WC1H 0AH, United Kingdom 3Thomas Young Centre, University College London, 20 Gordon Street, London WC1H 0AJ, Unite...

The symmetric space sine-Gordon models arise by conformal reduction of ordinary 2-dim σ-models, and they are integrable exhibiting a black-hole type metric in target space. We provide a Lagrangian formulation of these systems by considering a triplet of Lie groups F ⊃ G ⊃ H . We show that for every symmetric space F/G, the generalized sine-Gordon models can be derived from the G/H WZW action, p...