نتایج جستجو برای: axial field

تعداد نتایج: 829038  

1998
R. Amorim

We study the problem of axial and gauge anomalies in a reducible theory involving vector and tensor gauge fields coupled in a topological way. We consider that vector and axial fermionic currents couple with the tensor field in the same topological manner as the vector gauge one. This kind of coupling leads to an anomalous axial current, contrarily to the results found in literature involving o...

Journal: :Brain : a journal of neurology 2016
Nanna Witting Linda K Andersen John Vissing

Classically, myopathies are categorized according to limb or cranial nerve muscle affection, but with the growing use of magnetic resonance imaging it has become evident that many well-known myopathies have significant involvement of the axial musculature. New disease entities with selective axial muscle involvement have also been described recently, but overall the axial myopathy is unexplored...

Journal: :Physical review letters 2015
Ioannis Iatrakis Shu Lin Yi Yin

The dynamics of topological domains which break parity (P) and charge-parity (CP) symmetry of QCD are studied. We derive in a general setting that those local domains will generate an axial current and quantify the strength of the induced axial current. Our findings are verified in a top-down holographic model. The relation between the real time dynamics of those local domains and the chiral ma...

2001
Atsushi Hosaka Makoto Oka

If a baryon field belongs to a certain linear representation of chiral symmetry of SU(2)⊗SU(2), the axial coupling constant gA can be determined algebraically from the commutation relations derived from the superconvergence property of pion-nucleon scattering amplitudes. This establishes an algebraic explanation for the values of gA of such as the non-relativistic quark model, large-Nc limit an...

2006
Alexander Burinskii Sergi R. Hildebrandt

Kerr-Schild solutions of the Einstein-Maxwell field equations, containing semi-infinite axial singular lines, are investigated. It is shown that axial singularities break up the black hole, forming holes in the horizon. As a result, a tube-like region appears which allows matter to escape from the interior without crossing the horizon. It is argued that axial singularities of this kind, leading...

Journal: :Physical review letters 2006
A D Boozer A Boca R Miller T E Northup H J Kimble

Localization to the ground state of axial motion is demonstrated for a single, trapped atom strongly coupled to the field of a high finesse optical resonator. The axial atomic motion is cooled by way of coherent Raman transitions on the red vibrational sideband. An efficient state detection scheme enabled by strong coupling in cavity QED is used to record the Raman spectrum, from which the stat...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2012
Andrew P Bartlett Moorthi Pichumani Maximiliano Giuliani Wenceslao González-Viñas Anand Yethiraj

Fabricating large single crystals with colloidal spheres as building blocks is challenging and of competitive interest. Spin-coating of colloids offers a robust technique, which is highly reproducible in obtaining colloidal crystals even at fast dynamical regimes; however, these crystals are intrinsically polycrystalline due to the axial symmetry of spin-coating. We report a new method that app...

2005
P. R. Upadhyay K. R. Rajagopal

In this article, performance of 70 W, 350 rpm, axial-field and radial-field permanent magnet brushless dc motors is compared using computer aided design sCADd and finite element sFEd methods. The design variables like number of poles, slots per pole per phase, airgap length, airgap flux density, slot electric loading, stator flux density, and the permanent magnet material are changed one at a t...

2017
Adrian R. Muxworthy

Central to palaeomagnetism and geophysics is the assumption that the time-averaged geomagnetic field is approximated by a geocentric-axial-dipole (GAD). In this paper, it is demonstrated through the use of a simple cap model that due to secular variation the time-averaged palaeointensity record will always have a smaller latitudinal dependency than a true GAD field. However, the simple cap mode...

2017
Tracianne B. Neilsen Aaron B. Vaughn Kent L. Gee Masahito Akamine Koji Okamoto Susumu Teramoto Seiji Tsutsumi

The search for an equivalent acoustic source model for high-speed jet noise has recently focused on wavepacket representations. A wavepacket is defined as a spatially extended source with an axial amplitude distribution that grows, saturates and decays, an axial phase relationship that produces directional noise, and correlation lengths longer than the integral length scales of the turbulent st...

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