Results 31 to 40 of about 7,584 (267)

On magnetic guidance of charged particles

open access: yesPhysics Letters B, 2016
High precision beta decay experiments with polarized neutrons, employing magnetic guiding fields for the decay electrons in combination with energy dispersive detectors, initiated detailed studies of the point spread function (PSF) for homogeneous ...
H. Backe
doaj   +1 more source

Knot invariants from Virasoro related representation and pretzel knots

open access: yesNuclear Physics B, 2015
We remind the method to calculate colored Jones polynomials for the plat representations of knot diagrams from the knowledge of modular transformation (monodromies) of Virasoro conformal blocks with insertions of degenerate fields.
D. Galakhov   +3 more
doaj   +1 more source

Remarks on rotating shallow-water magnetohydrodynamics [PDF]

open access: yesNonlinear Processes in Geophysics, 2013
We show how the rotating shallow-water MHD model, which was proposed in the solar tachocline context, may be systematically derived by vertical averaging of the full MHD equations for the rotating magneto fluid under the influence of gravity.
V. Zeitlin
doaj   +1 more source

Transmission of low-energy scalar waves through a traversable wormhole

open access: yesEuropean Physical Journal C: Particles and Fields, 2020
We study the scattering of low-energy massless and massive minimally coupled scalar fields by an asymptotically flat traversable wormhole. We provide a comprehensive treatment of this problem offering analytic expressions for the transmission and ...
Bahareh Azad   +2 more
doaj   +1 more source

Generic automorphisms of fields

open access: yesAnnals of Pure and Applied Logic, 1997
It is shown that the theory of fields with an automorphism has a decidable model companion. In this paper, quantifier-elimination is established in a natural language. The theory is intimately connected (via fixed fields) to Ax's theory of pseudofinite fields and analogues are obtained for most of Ax's classical results. Some indication is given of the
openaire   +1 more source

Generalized background-field method [PDF]

open access: yesPhysical Review D, 1997
The graphical method discussed previously can be used to create new gauges not reachable by the path-integral formalism. By this means a new gauge is designed for more efficient two-loop QCD calculations. It is related to but simpler than the ordinary background-field gauge, in that even the triple-gluon vertices for internal lines contain only four ...
Feng, Y. J., Lam, C. S.
openaire   +2 more sources

Fractional Mathieu Equation with Two Fractional Derivatives and Some Applications

open access: yesFractal and Fractional
The importance of this research comes from the several applications of the Mathieu equation and its generalizations in many scientific fields. Two models of fractional Mathieu equations are provided using Katugampola fractional derivatives in the sense ...
Ahmed Salem   +2 more
doaj   +1 more source

4D spin-2 fields from 5D Chern-Simons theory

open access: yesJournal of High Energy Physics, 2018
We consider a 5-dimensional Chern-Simons gauge theory for the isometry group of Anti-de-Sitter spacetime, AdS4+1 ≃ SO(4, 2), and invoke different dimensional reduction schemes in order to relate it to 4-dimensional spin-2 theories.
N. L. González Albornoz   +3 more
doaj   +1 more source

Teleparallel axions and cosmology

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We consider the most general teleparallel theory of gravity whose action is a linear combination of the five scalar invariants which are quadratic in the torsion tensor.
Manuel Hohmann, Christian Pfeifer
doaj   +1 more source

Are Fertility Preservation Procedures Before Gonadotoxic Therapy and Hematopoietic Stem Cell Transplantation Feasible and Safe in Very Young Children? A Retrospective Cohort Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Fertility preservation (FP) is increasingly integrated into the care of pediatric patients exposed to gonadotoxic therapy or conditioning for hematopoietic stem cell transplantation (HSCT), yet perioperative data in infants and toddlers remain scarce.
Kerstin Saalabian   +13 more
wiley   +1 more source

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