Physical sciences topic list of research papers
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MS charm mass from charmonium sum rules with contour improvement
Abstract A detailed error analysis is carried out for the determination of the MS charm quark mass ...
2004 / A.H. Hoang, M. Jamin -
Dark energy from a phantom field near a local potential minimum
Abstract We examine dark energy models in which a phantom field ϕ is rolling near a local minimum of its potential V ( ϕ ) . We...
2009 / Sourish Dutta, Robert J. Scherrer -
Cardy–Verlinde formula and holographic dark energy
Abstract If we separate energy in a holographic theory into an extensive part and an intrinsic part, where the extensive part is given by the cosmological constant, and assume entropy be given by the Gibbons–Hawking formula, the Cardy–Verlinde...
2004 / Ke Ke, Miao Li -
Gravitino production from heavy moduli decay and cosmological moduli problem revived
Abstract The cosmological moduli problem for relatively heavy moduli fields is reinvestigated. For this purpose we examine the decay of a modulus field at a quantitative level. The modulus dominantly decays into gauge bosons and gauginos, provided...
2006 / Shuntaro Nakamura, Masahiro Yamaguchi -
A possible connection between neutrino mass generation and the lightness of a NMSSM pseudoscalar
Abstract One of the interesting properties of the NMSSM is that it can accommodate a light pseudoscalar of order 10 GeV. However, such scenarios are challenged by several experimental constraints, especially those related to the fermionic decays of...
2011 / Asmaa Abada, Gautam Bhattacharyya, Debottam Das, Cédric Weiland -
Nonabelian parafermions and their dimensions
Abstract We propose a generalization of the Zamolodchikov–Fateev parafermions which are abelian, to nonabelian groups. The fusion rules are given by the tensor product of representations of the group. Using Vafa equations we get the allowed...
2010 / Roman Dovgard, Doron Gepner -
Cascade production in heavy-ion collisions at SIS energies
Abstract Production of the doubly strange Ξ baryon in heavy-ion collisions at SIS energies is studied in a relativistic transport model that includes perturbatively the strangeness-exchange reactions ...
2004 / Lie-Wen Chen, Che Ming Ko, Yiharn Tzeng -
Quark confinement from colour confinement
Abstract We relate quark confinement, as measured by the Polyakov-loop order parameter, to colour confinement, as described by the Kugo–Ojima/Gribov–Zwanziger scenario. We identify a simple criterion for quark confinement based on the IR behaviour...
2010 / Jens Braun, Holger Gies, Jan M. Pawlowski -
Eleven-dimensional CJS supergravity and the D'Auria–Fré group
Abstract An action for eleven-dimensional standard supergravity genuinely invariant under the D'Auria–Fré group is proposed. The construction of the action is carried out through a generalization of the Stelle–West–Grignani–Nardelli formalism. The...
2008 / A. Pérez, P. Minning, P. Salgado -
One-loop effective potential from higher-dimensional AdS black holes
Abstract We study the quantum effects in a brane-world model in which a positive constant curvature brane universe is embedded in a higher-dimensional bulk AdS black hole, instead of the usual portion of the AdS 5. By using zeta ...
2004 / Guido Cognola, Emilio Elizalde, Sergio Zerbini -
Quasinormal spectrum and the black hole membrane paradigm
Abstract The membrane paradigm approach to black hole physics introduces the notion of a stretched horizon as a fictitious time-like surface endowed with physical characteristics such as entropy, viscosity and electrical conductivity. We show that...
2008 / Andrei Starinets -
Spin dependence of heavy quark fragmentation
Abstract We propose that the non-perturbative part of the fragmentation function describing the transition from a heavy quark to a heavy meson is proportional to the square of the produced meson wave function at the origin, taking into account...
2008 / Fernando Cornet, Carlos A. García Canal -
Chiral supersymmetric Standard Model spectra from orientifolds of Gepner models
Abstract We construct d = 4 , N = 1 orientifolds of Gepner...
2005 / T.P.T. Dijkstra, L.R. Huiszoon, A.N. Schellekens -
Relativistic dynamics of multi-BPS D-vortices and straight BPS D-strings
Abstract Moduli space dynamics of multi-D-vortices from D 2 D ¯ 2 ...
2008 / Inyong Cho, Taekyung Kim, Yoonbai Kim, Kyungha Ryu -
Nuclear limits on gravitational waves from elliptically deformed pulsars
Abstract Gravitational radiation is a fundamental prediction of General Relativity. Elliptically deformed pulsars are among the possible sources emitting gravitational waves (GWs) with a strain-amplitude dependent upon the star's quadrupole moment,...
2008 / Plamen G. Krastev, Bao-An Li, Aaron Worley -
Deformed special relativity in position space
Abstract We investigate how deformations of special relativity in momentum space can be extended to position space in a consistent way, such that the dimensionless contraction between wave-vector and coordinate-vector remains invariant. By using a...
2007 / Sabine Hossenfelder -
Neutrino production by UHECR proton interactions in the infrared background
Abstract We discuss the contribution of proton photoproduction interactions in the isotropic infrared/optical background to the cosmic neutrino fluxes. This contribution has a strong dependence on the proton injection energy spectrum, and is...
2004 / Todor Stanev -
Neutrino mass operators of dimension up to nine in two-Higgs-doublet model
Abstract We study higher-dimensional neutrino mass operators in a low energy theory that contains a second Higgs doublet, the two Higgs doublet model. The operators are relevant to underlying theories in which the lowest dimension-five mass...
2011 / Yi Liao -
Nucleon–meson coupling constants and form factors in the quark model
Abstract We demonstrate the calculation of the coupling constants and form factors required by effective hadron Lagrangians using the quark model. These relations follow from equating expressions for strong transition amplitudes in the two...
2006 / C. Downum, T. Barnes, J.R. Stone, E.S. Swanson -
Regular black hole remnants in de Sitter space
Abstract We address the question of thermodynamical evolution of regular spherically symmetric cosmological black holes with de Sitter center. Space–time is asymptotically de Sitter as r → ...
2010 / Irina Dymnikova, Michał Korpusik