A generalization of the Yang-Mills covariant derivative, that uses both vector and scalar fields and transforms as a 4-vector contracted with Dirac matrices, is used to simplify the Glashow-Weinberg-Salam model. Since SU (3) assigns the wrong hypercharge to the Higgs boson, it is necessary to use a special representation of U (3) to obtain all the correct quantum numbers. A surplus gauge scalar...

An approach for the computations of upper bounds on the size of large complete arcs is presented. We obtain, in particular, geometrical properties of irreducible envelopes associated to a second largest complete arc provided that the order of the underlying field is large enough. MIRAMARE TRIESTE July 1999 E-mail: [email protected] E-mail: [email protected] Regular Associate of the...

Simulation of dust aerosol and its regional feedbacks over East Asia using a regional climate model D. F. Zhang, A. S. Zakey, X. J. Gao, and F. Giorgi The Laboratory of Climate Study of China Meteorological Administration, National Climate Center, 100081, Beijing, China Abdus Salam International Centre for Theoretical Physics, 34100, Trieste, Italy Received: 11 December 2007 – Accepted: 9 Janua...

We review the construction of particle physics models in the framework of noncommutative geometry. We first give simple examples, and then progress to outline the Connes-Lott construction of the standard Weinberg-Salam model and our construction of the SO(10) model. We then discuss the analogue of the Einstein-Hilbert action and gravitational matter couplings. Finally we speculate on some exper...

Just as fermion zero modes can alter the degeneracy and quantum numbers of a soliton, fermion energies can affect the form and stability of a nontopological soliton. We discuss the kink in a two-dimensional linear sigma model, and show that, when coupled to fermions, the kink is no longer an extremum of the energy functional. The kink in this model possesses many similarities to the electroweak...

D. C. Cabra,1 N. E. Grandi,1,2 G. A. Silva,1,2 and M. B. Sturla3 1Insituto de Fı́sica de La Plata (IFLP), CONICET & Departamento de Fı́sica, Universidad Nacional de la Plata, C.C. 67, (1900) La Plata, Argentina 2Abdus Salam International Centre for Theoretical Physics (ICTP), Associate Scheme, Strada Costiera 11, 34151, Trieste, Italy 3Instituto de Ciencia de Materiales de Madrid (CSIC), Cantobla...

M. Chaichian†, A. Demichev†,a P. Prešnajder†,b, M. M. Sheikh-Jabbari†† and A. Tureanu† High Energy Physics Division, Department of Physics, University of Helsinki and Helsinki Institute of Physics, P.O. Box 64, FIN-00014 Helsinki, Finland Nuclear Physics Institute, Moscow State University, 119899 Moscow, Russia Department of Theoretical Physics, Comenius University, Mlynská dolina, SK-84248 Bra...

Alessandro Chessa, H. Eugene Stanley, Alessandro Vespignani, and Stefano Zapperi Dipartimento di Fisica and Unitá INFM, Universitá di Cagliari, Via Ospedale 72, 09124 Cagliari, Italy Center for Polymer Studies and Department of Physics, Boston University, Boston, Massachusetts 02215 The Abdus Salam International Centre for Theoretical Physics (ICTP), P.O. Box 586, 34100 Trieste, Italy PMMH-ESPC...

SRIRAM POTHAPREGADA Department of Pediatrics, Indira Gandhi Medical College and Research Institute, Pondicherry 605 009, [email protected] REFERENCES 1. Mothers feed newborn babies donkey milk. Times of India 2008 May 6; Chennai: Page 6(Col-1) 2. Curative donkey milk in high demand in Chennai. Times of India 2011 Jan 25; Chennai: Page 4(Col2). 3. Haroon S, Das JK, Salam RA, Imdad A, Bhutt...

John Realpe-Gomez, ∗ Bartosz Szczesny, 3, † Luca Dall’Asta, 4, ‡ and Tobias Galla § Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy Theoretical Physics, School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom Department of Applied Mathematics, School of Mathematics, University of Leeds, Leeds LS2 9JT, United Kingdom The Abdus Sal...