Physical sciences topic list of research papers
-
Viscous dark fluid
Abstract An unified dark energy and dark matter model within the framework of a model of a continuous medium with bulk viscosity (dark fluid) is considered. It is supposed that a bulk viscosity coefficient is an arbitrary function of the Hubble...
2008 / Vladimir Folomeev, Victor Gurovich -
Quark–hadron phase transition in a magnetic field
Abstract Quark–hadron phase transition in QCD in the presence of magnetic field is studied. It is shown that both the temperature of a phase transition and latent heat decrease compared to the case of zero magnetic field. The phase diagram in the...
2008 / N.O. Agasian, S.M. Fedorov -
Family of singular solutions in a SUSY bulk-boundary system
Abstract A set of classical solutions of a singular type is found in a 5D SUSY bulk-boundary system. The “parallel” configuration, where the whole components of fields or branes are parallel in the iso-space, naturally appears. It has three free...
2004 / Shoichi Ichinose, Akihiro Murayama -
Low-lying resonance states in the 9Be continuum
Abstract Excited states in 9Be from 2 to 9 MeV are studied via beta delayed particle emission from 9Li. The broad overlapping particle unbound states are investigated using an extension of an experimental method developed for dealing with three-body ...
2005 / Y. Prezado, M.J.G. Borge, C.Aa. Diget, L.M. Fraile, B.R. Fulton, et al. -
Galactic dynamos and slow decay of magnetic fields from torsion modes of Lorentz violation
Abstract Campanelli et al. (2009) [9] have recently shown that electromagnetic fluctuations in Lorentz violation theories Colladay and Kostelecky (1998) [8] along differential rotation may induce galactic dynamo amplification of magnetic fields from ...
2010 / L.C. Garcia de Andrade -
Charged rotating black holes in odd dimensions
Abstract We consider charged rotating black holes of Einstein–Maxwell theory in D = 2 N + 1 ...
2006 / Jutta Kunz, Francisco Navarro-Lérida, Jan Viebahn -
Natural inflation and flavor mixing from Peccei–Quinn symmetry breaking
Abstract We propose a left–right symmetric model to simultaneously give natural inflation and flavor mixing from a Peccei–Quinn symmetry breaking at the Planck scale. Our model can be embedded into SO ...
2011 / Pei-Hong Gu, Manfred Lindner -
Non-Gaussianity and baryonic isocurvature fluctuations in the curvaton scenario
Abstract We discuss non-Gaussianity and baryonic isocurvature fluctuations in the curvaton scenario, assuming that the baryon asymmetry of the universe originates only from the decay products of the inflaton. When large non-Gaussianity is realized...
2008 / Takeo Moroi, Tomo Takahashi -
Nearly perfect fluid in Au+Au collisions at RHIC
Abstract In the Israel–Stewart's theory of dissipative hydrodynamics, we have analysed the STAR data on ϕ meson production in Au+Au collisions at s ...
2009 / A.K. Chaudhuri -
Sum rules for strange form factors and flavor singlet axial charges
Abstract In chiral models with SU(3) group structure, strange form factors of baryon octet are evaluated by constructing their sum rules to yield theoretical predictions comparable to the recent experimental data of the SAMPLE Collaboration. We also ...
2004 / Soon-Tae Hong -
Natural suppression of proton decay in supersymmetric type III seesaw models
Abstract Supersymmetric Standard Model (MSSM) has two sources of rapid proton decay: (i) R-parity breaking terms and (ii) higher dimensional Planck induced B-violating terms; its extensions to include neutrino masses via the type I seesaw mechanism...
2009 / Rabindra N. Mohapatra -
Some numerical studies of the evolution of generalized parton distributions
Abstract We study the evolution behavior of generalized parton distributions at small longitudinal momentum fraction. Particular attention is paid to the ratio of a generalized parton distribution and its forward limit, to the mixing between quarks...
2008 / M. Diehl, W. Kugler -
Dark matter: The leptonic connection
Abstract Recent observations of high-energy positrons and electrons by the PAMELA and ATIC experiments may be an indication of the annihilation of dark matter into leptons and not quarks. This leptonic connection was foreseen already some years ago...
2009 / Qing-Hong Cao, Ernest Ma, Gabe Shaughnessy -
Spontaneous Lorentz violation and the long-range gravitational preferred-frame effect
Abstract Lorentz-violating operators involving Standard Model fields are tightly constrained by experimental data. However, bounds are more model-independent for Lorentz violation appearing in purely gravitational couplings. The spontaneous breaking ...
2005 / Michael L. Graesser, Alejandro Jenkins, Mark B. Wise -
Treatment of the intrinsic Hamiltonian in particle-number nonconserving theories
Abstract We discuss the implications of using an intrinsic Hamiltonian in theories without particle-number conservation, e.g., the Hartree–Fock–Bogoliubov approximation, where the Hamiltonian's particle-number dependence leads to discrepancies if...
2009 / H. Hergert, R. Roth -
Weak phases from topological-amplitude parametrization
Abstract We propose a parametrization for two-body nonleptonic B meson decays, in which the various topologies of amplitudes are counted in terms of powers of the Wolfenstein parameter λ∼0.22. The weak phases and the amplitudes are determined by...
2004 / Yeo-Yie Charng, Hsiang-Nan Li -
Double parton correlations versus factorized distributions
Abstract Using the generalized Lipatov–Altarelli–Parisi–Dokshitzer equations for the two-parton distribution functions we show numerically that the dynamical correlations contribute to these functions quite a lot in comparison with the factorized...
2004 / V.L. Korotkikh, A.M. Snigirev -
Examining the cosmic acceleration with the latest Union2 supernova data
Abstract In this Letter, by reconstructing the Om diagnostic and the deceleration parameter q from the latest Union2 Type Ia Supernova sample with and without the systematic error along with the baryon acoustic oscillation (BAO) and the cosmic...
2010 / Zhengxiang Li, Puxun Wu, Hongwei Yu -
Systematic calculations on the ground state properties of Mg isotopes by the macroscopic–microscopic model
Abstract The ground state properties of Mg isotopes are systematically investigated by the macroscopic–microscopic (MM) model with an isospin-dependent spin–orbit potential. Special emphasis is placed on the deformation and the disappearance of the ...
2006 / Qijun Zhi, Zhongzhou Ren -
Anomalous currents in dense matter under a magnetic field
Abstract We consider fermionic dense matter under a magnetic field, where fermions couple minimally to gauge fields, and calculate anomalous currents at one loop. We find anomalous currents are spontaneously generated along the magnetic field but...
2011 / Deog Ki Hong