Physical sciences topic list of research papers
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Spinning membranes
Abstract We present new solutions of the classical equations of motion of bosonic (matrix-)membranes. Those relating to minimal surfaces in spheres provide spinning membrane solutions in AdS ...
2004 / Joakim Arnlind, Jens Hoppe, Stefan Theisen -
The Chern–Simons state for topological invariants
Abstract The covariant canonical formalism for the second Chern and Euler topological invariants which depends of a connection valued in the Lie algebra of SO ( 3 ...
2009 / Alberto Escalante -
Some spacetimes with higher rank Killing–Stäckel tensors
Abstract By applying the lightlike Eisenhart lift to several known examples of low-dimensional integrable systems admitting integrals of motion of higher-order in momenta, we obtain four- and higher-dimensional Lorentzian spacetimes with irreducible ...
2011 / G.W. Gibbons, T. Houri, D. Kubizňák, C.M. Warnick -
Type I and new seesaw in left–right symmetric theories
Abstract We extend the Type I seesaw and suggest a new seesaw mechanism to generate neutrino masses within the left–right symmetric theories where parity is spontaneously broken. We construct a next to minimal left–right symmetric model where...
2010 / Joydeep Chakrabortty -
Einstein–Rosen “bridge” needs lightlike brane source
Abstract The Einstein–Rosen “bridge” wormhole solution proposed in the classic paper (Einstein and Rosen (1935) [1]) does not satisfy the vacuum Einstein equations at the wormhole throat. We show that the fully consistent formulation of the original ...
2009 / Eduardo Guendelman, Alexander Kaganovich, Emil Nissimov, Svetlana Pacheva -
Gauge coupling unification in the exceptional supersymmetric Standard Model
Abstract We consider the renormalisation group flow of gauge couplings within the so-called exceptional supersymmetric Standard Model (E6SSM) based on the low-energy matter content of 27-dimensional representations of the gauge group ...
2007 / S.F. King, S. Moretti, R. Nevzorov -
Casimir effect in a six-dimensional vortex scenario
Abstract Recently Randjbar-Daemi and Shaposhnikov put forward a 4-dimensional effective QED coming from a Nielsen–Olesen vortex solution of the Abelian Higgs model with fermions coupled to gravity in D ...
2005 / Román Linares, Hugo A. Morales-Técotl, Omar Pedraza -
A generic test of modified gravity models which emulate dark matter
Abstract We propose a generic test for models in which gravity is modified to do away with dark matter. These models tend to have gravitons couple to a different metric than ordinary matter. A strong test of such models comes from comparing the...
2007 / E.O. Kahya, R.P. Woodard -
Vacuum geometry and the search for new physics
Abstract We propose a new guiding principle for phenomenology: special geometry in the vacuum space. New algorithmic methods which efficiently compute geometric properties of the vacuum space of N = ...
2006 / James Gray, Yang-Hui He, Vishnu Jejjala, Brent D. Nelson -
The Cardy–Verlinde formula and entropy of the charged rotating BTZ black hole
Abstract In this Letter we show that the entropy of black hole horizon in charged rotating BTZ space–time can be described by the Cardy–Verlinde formula, which is supposed to be an entropy formula of conformal field theory in any dimension. ...
2009 / M.R. Setare, Mubasher Jamil -
Worldsheet instantons, torsion curves and non-perturbative superpotentials
Abstract As a first step towards computing instanton-generated superpotentials in heterotic standard model vacua, we determine the Gromov–Witten invariants for a Calabi–Yau threefold with fundamental group ...
2007 / Volker Braun, Maximilian Kreuzer, Burt A. Ovrut, Emanuel Scheidegger -
Enhanced production of TeV right-handed neutrinos through the large magnetic moment
Abstract We examine the effects of magnetic moments of right-handed neutrinos, whose masses are set at around TeV scale, then it is plausible to have a large enhancement for the production cross section of TeV scale right-handed neutrinos though the ...
2008 / Tatsuru Kikuchi -
The electromagnetic coupling and the dark side of the Universe
Abstract We examine the properties of dark energy and dark matter through the study of the variation of the electromagnetic coupling. For concreteness, we consider the unification model of dark energy and dark matter, the generalized Chaplygin gas...
2007 / M.C. Bento, O. Bertolami, P. Torres -
The geometrical properties of Riemannian superspaces, exact solutions and the mechanism of localization
Abstract The geometrical meaning of a particularly simple metric in the superspace is elucidated and the possible connection with mechanisms of topological origin in high energy physics is analyzed and discussed. New possible mechanism of the...
2008 / Diego Julio Cirilo-Lombardo -
Non-minimally coupled canonical, phantom and quintom models of holographic dark energy
Abstract We investigate canonical, phantom and quintom models, with the various fields being non-minimally coupled to gravity, in the framework of holographic dark energy. We classify them and we discuss their cosmological implications. In...
2008 / M.R. Setare, E.N. Saridakis -
Angular momentum population in fragmentation reactions
Abstract Using a relativistic transport model followed by a statistical sequential binary emission model, the population of metastable high-spin isomeric states are studied in relativistic projectile fragmentation reactions. The initial angular...
2008 / Subrata Pal, Rudrajyoti Palit -
Viscous Ricci dark energy
Abstract We investigate the viscous Ricci dark energy (RDE) model by assuming that there is bulk viscosity in the linear barotropic fluid and the RDE. In the RDE model without bulk viscosity, the universe is younger than some old objects at certain...
2009 / Chao-Jun Feng, Xin-Zhou Li -
Towards NNLO accuracy in the QCD sum rule for the kaon distribution amplitude
Abstract We calculate the O ( α s ) and ...
2008 / K.G. Chetyrkin, A. Khodjamirian, A.A. Pivovarov -
Entropy of the brane-world black hole
Abstract The entropy in the background of the brane-world black hole with tidal charge has been studied by using the generalized uncertainty principles. Comparing with the four-dimensional black holes, this TeV-size black hole, which contains...
2008 / Fu-Wen Shu, You-Gen Shen -
Real symplectic formulation of local special geometry
Abstract We consider a formulation of local special geometry in terms of Darboux special coordinates P I = ...
2006 / Sergio Ferrara, Óscar Maciá