Physical sciences topic list of research papers
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Approach to the rotation driven vibrational to axially rotational shape phase transition along the yrast line of a nucleus
Abstract By analyzing the potential energy surface, the shape phase diagram and the energy spectrum of the nucleus in U ( 5 ) ...
2005 / Yu-Xin Liu, Liang-Zhu Mu, Haiqing Wei -
Shape invariance method for quintom model in the bent brane background
Abstract In the present Letter, we study the braneworld scenarios in the presence of quintom dark energy coupled by gravity. The first-order formalism for the bent brane (for both de Sitter and anti-de Sitter geometry), leads us to discuss the shape ...
2008 / M.R. Setare, J. Sadeghi, A.R. Amani -
Effect of neutrino trapping on the three flavor FFLO phase of QCD
Abstract We compute the effect of a non-zero lepton chemical potential on the structure of the three flavor Fulde–Ferrell–Larkin–Ovchinnikov (FFLO) phase of QCD at finite temperature. We show that, as in the BCS case, the lepton chemical potential...
2006 / V. Laporta, M. Ruggieri -
Minimally doubled fermions at one loop
Abstract Minimally doubled fermions have been proposed as a cost-effective realization of chiral symmetry at non-zero lattice spacing. Using lattice perturbation theory at one loop, we study their renormalization properties. Specifically, we...
2009 / Stefano Capitani, Johannes Weber, Hartmut Wittig -
Exit from inflation and a paradigm for vanishing cosmological constant in self-tuning models
Abstract We propose a paradigm for the inflation and the vanishing cosmological constant in a unified way with the self-tuning solutions of the cosmological constant problem. Here, we consider a time-varying cosmological constant in self-tuning...
2004 / Jihn E. Kim, Hyun Min Lee -
Extracting excited states from lattice QCD: the Roper resonance
Abstract We present a new method for extracting excited states from a single two-point correlation function calculated on the lattice. Our method simply combines the correlation function evaluated at different time slices so as to “subtract” the...
2004 / D. Guadagnoli, M. Papinutto, S. Simula -
Direct detection of the cosmic neutrino background including light sterile neutrinos
Abstract Current cosmological data drop an interesting hint about the existence of sub-eV sterile neutrinos, which should be a part of the cosmic neutrino background (CνB). We point out that such light sterile neutrinos may leave a distinct imprint...
2010 / Y.F. Li, Zhi-zhong Xing, Shu Luo -
Lifetime of unstable hairy black holes
Abstract During the last two decades solutions of black holes with various types of “hair” have been discovered. Remarkably, it has been established that many of these hairy black holes are unstable—under small perturbations the hair may collapse....
2008 / Shahar Hod -
Gaugino versus sfermion masses in gauge mediation
Abstract A well-known signature of supersymmetry breaking scenarios with ordinary gauge mediation is a universal formula governing gaugino and sfermion masses such that their ratio is of order one. On the other hand, recently studied models with...
2009 / Steven A. Abel, Joerg Jaeckel, Valentin V. Khoze -
The nucleon electric dipole form factor from dimension-six time-reversal violation
Abstract We calculate the electric dipole form factor of the nucleon that arises as a low-energy manifestation of time-reversal violation in quark–gluon interactions of effective dimension 6: the quark electric and chromoelectric dipole moments, and ...
2010 / J. de Vries, E. Mereghetti, R.G.E. Timmermans, U. van Kolck -
Curvature from quantum deformations
Abstract A Poisson coalgebra analogue of a (non-standard) quantum deformation of sl ( 2 ) is shown to generate an integrable...
2005 / Angel Ballesteros, Francisco J. Herranz, Orlando Ragnisco -
Limited validity of West and Yennie interference formula for elastic scattering of hadrons
Abstract The proof will be given that the commonly used West and Yennie integral formula for the relative phase of Coulomb and elastic hadronic amplitudes leads to a strong limitation of physical characteristics and should be abandoned. At the...
2007 / Vojtěch Kundrát, Miloš Lokajíček, Ivo Vrkoč -
Energy conservation and scaling violations in particle production
Abstract We use a simple Colour Glass Condensate/String Percolation Model argument to show the existence, due to energy conservation, of bounds to the violation of Feynman scaling and limiting fragmentation.
2008 / J. Dias de Deus, J.G. Milhano -
Solving the flavour problem with hierarchical fermion wave functions
Abstract We investigate the flavour structure of generic extensions of the SM where quark and lepton mass hierarchies and the suppression of flavour-changing transitions originate only by the normalization constants of the fermion kinetic terms. We...
2008 / Sacha Davidson, Gino Isidori, Selma Uhlig -
Anomalous anomalous scaling?
Abstract Motivated by speculations about infrared deviations from the standard behavior of local quantum field theories, we explore the possibility that such effects might show up as an anomalous running of coupling constants. The most sensitive...
2008 / Alessandro Strumia, Nikolaos Tetradis -
Rate of Convergence of the Configuration Interaction Model for the Helium Ground State2009 / Benjamin D. Goddard
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Magnetic Nature of Water Intercalated Na0.35CoO2
Abstract In order to clarify the carrier density dependence of the microscopic magnetic nature in Na x CoO2 * yH2O, we have performed a μ +SR study of H2O and D2O absorbed samples....
2012 / Jun Sugiyama, Yutaka Ikedo, Martin Mansson, Oren Ofer, Eduardo J. Ansaldo, et al. -
Low-temperature light detectors: Neganov–Luke amplification and calibration
Abstract The simultaneous measurement of phonons and scintillation light induced by incident particles in a scintillating crystal such as CaWO4 is a powerful technique for the active rejection of background induced by γʼs and βʼs and even neutrons...
2012 / C. Isaila, C. Ciemniak, F.v. Feilitzsch, A. Gütlein, J. Kemmer, et al. -
Zero-field Spin Depolarization of Low-Energy Muons in Ferromagnetic Nickel and Silver Metal
Abstract We present zero-field muon-spin depolarization measurements in nickel and silver performed using low-energy muon-spin relaxation technique.Ni or Ag are usually used in this depth-resolved technique as a backing material to enable background ...
2012 / H. Saadaoui, Z. Salman, T. Prokscha, A. Suter, B.M. Wojek, et al. -
Dark matter asymmetry in supersymmetric Dirac leptogenesis
Abstract We discuss asymmetric or symmetric dark matter candidate in the supersymmetric Dirac leptogenesis scenario. By introducing a singlet superfield coupling to right-handed neutrinos, the overabundance problem of dark matter can be evaded and...
2013 / Ki-Young Choi, Eung Jin Chun, Chang Sub Shin