Physical sciences topic list of research papers
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Antisymmetric tensor fields in Randall–Sundrum thick branes
Abstract In this Letter we study the issue of localization of the three-form field in a Randall–Sundrum-like scenario. We simulate our membrane by kinks embedded in D = 5 ...
2010 / G. Alencar, R.R. Landim, M.O. Tahim, C.R. Muniz, R.N. Costa Filho -
Threshold anomalies in Horava–Lifshitz-type theories
Abstract Recently the study of threshold kinematic requirements for particle-production processes has played a very significant role in the phenomenology of theories with departures from Poincaré symmetry. We here specialize these threshold studies...
2010 / Giovanni Amelino-Camelia, Leonardo Gualtieri, Flavio Mercati -
Vector mesons in nuclear μ−–e− conversion
Abstract We study nuclear μ −–e − conversion in the general framework of an effective Lagrangian approach without referring to any specific realization of the physics beyond the Standard Model (SM)...
2004 / Amand Faessler, Th. Gutsche, Sergey Kovalenko, V.E. Lyubovitskij, Ivan Schmidt, et al. -
Three-loop universal anomalous dimension of the Wilson operators in N=4 SUSY Yang–Mills model
Abstract We present results for the three-loop universal anomalous dimension γ uni(j) of Wilson twist-2 operators in the N=4 Supersymmetric Yang–Mills model. These expressions are obtained by extracting...
2004 / A.V. Kotikov, L.N. Lipatov, A.I. Onishchenko, V.N. Velizhanin -
Storage of very cold neutrons in a trap with nano-structured walls
Abstract We report on storage of Very Cold Neutrons (VCN) in a trap with walls containing powder of diamond nanoparticles. The efficient VCN reflection is provided by multiple diffusive elastic scattering of VCN at single nanoparticles in powder....
2009 / E.V. Lychagin, A.Yu. Muzychka, V.V. Nesvizhevsky, G. Pignol, K.V. Protasov, et al. -
The QCD transition temperature: Results with physical masses in the continuum limit
Abstract The transition temperature ( T c ) of QCD is determined by Symanzik improved gauge and stout-link improved...
2006 / Y. Aoki, Z. Fodor, S.D. Katz, K.K. Szabó -
Does string theory predict an open universe?
Abstract It has been claimed that the string landscape predicts an open universe, with negative curvature. The prediction is a consequence of a large number of metastable string vacua, and the properties of the Coleman–De Luccia instanton which...
2008 / Roman V. Buniy, Stephen D.H. Hsu, A. Zee -
Solving the flavour problem in supersymmetric Standard Models with three Higgs families
Abstract We show how a non-Abelian family symmetry Δ 27 can be used to solve the flavour problem of supersymmetric...
2010 / R. Howl, S.F. King -
Heavy quark symmetry constraints on semileptonic form factors and decay widths of doubly heavy baryons
Abstract We show how heavy quark symmetry constraints on doubly heavy baryon semileptonic decay widths can be used to test the validity of different quark model calculations. The large discrepancies in the results observed between different quark...
2008 / E. Hernández, J. Nieves, J.M. Verde-Velasco -
Topological gravity from a transgression gauge field theory
Abstract It is shown that a topological action for gravity in even dimensions can be obtained from a gravity theory whose Lagrangian is given by a transgression form invariant under the Poincaré group. The field ...
2010 / N. Merino, A. Perez, P. Salgado, O. Valdivia -
Exact solution of finite size Mean Field Percolation and application to nuclear fragmentation
Abstract Random Graphs and Mean Field Percolation are two names given to the most general mathematical model of systems composed of a set of connected entities. It has many applications in the study of real life networks as well as physical systems. ...
2011 / P. Désesquelles -
Nontrivial correlation between the CKM and MNS matrices
Abstract We point out that the Cabibbo–Kobayashi–Maskawa (CKM) quark mixing matrix V CKM and the Maki–Nakagawa–Sakata...
2005 / Zhi-Zhong Xing -
Ground state bands of the E(5) and X(5) critical symmetries obtained from Davidson potentials through a variational procedure
Abstract Davidson potentials of the form β 2+β 0 4/β 2, when used in the original Bohr Hamiltonian for γ-independent potentials bridge the U(5) and O(6) symmetries....
2004 / Dennis Bonatsos, D. Lenis, N. Minkov, D. Petrellis, P.P. Raychev, et al. -
Flux compactifications, gauge algebras and De Sitter
Abstract The introduction of (non-)geometric fluxes allows for N = 1 moduli stabilisation in a De Sitter vacuum. The aim of this Letter is to assess to...
2010 / Giuseppe Dibitetto, Román Linares, Diederik Roest -
Mutual boosting of the saturation scales in colliding nuclei
Abstract Saturation of small-x gluons in a nucleus, which has the form of transverse momentum broadening of projectile gluons in pA collisions in the nuclear rest frame, leads to a modification of the parton distribution functions in the beam...
2011 / B.Z. Kopeliovich, H.J. Pirner, I.K. Potashnikova, Iván Schmidt -
Massless monopole clouds and electric–magnetic duality
Abstract We discuss the Montonen–Olive electric–magnetic duality for the BPS massless monopole clouds in N = 4 supersymmetric Yang–Mills theory with...
2004 / Xingang Chen -
Spinning fluid cosmology
Abstract The dynamics of a spinning fluid in a flat cosmological model is investigated. The space–time is itself generated by the spinning fluid which is characterized by an energy–momentum tensor consisting a sum of the usual perfect-fluid...
2008 / Morteza Mohseni -
Diffractive quarkonium production in association with a photon at the LHC
Abstract The rates for diffractive quarkonium plus prompt-photon associated production at the LHC are estimated. The theoretical framework considered in the J / Ψ ...
2009 / M.B. Gay Ducati, M.M. Machado, M.V.T. Machado -
The hard pomeron in soft data
Abstract We show that the data for the total cross section and for the real part of the elastic amplitude indicate the presence of a hard pomeron in πp and Kp elastic scattering at t=0, compatible with that observed in deep inelastic scattering. We...
2004 / J.R Cudell, E Martynov, O Selyugin, A Lengyel -
On prospects for dark matter indirect detection in the Constrained MSSM
Abstract We apply a rigorous statistical analysis to the Constrained MSSM to derive the most probable ranges of the diffuse gamma radiation flux from the direction of the Galactic center and of the positron flux from the Galactic halo due to...
2008 / Leszek Roszkowski, Roberto Ruiz de Austri, Joe Silk, Roberto Trotta