نتایج جستجو برای: elementary particle electromagnetic interaction

تعداد نتایج: 835484  

2004
Yannis K. Semertzidis

The search for electric dipole moments (EDM) of fundamental particles started approximately fifty years with Ramsey’s search for a neutron EDM. Even though the techniques have been improved and the sensitivities has reached an unprecedented small level no EDM of a fundamental particle has been observed so far. Non-the-less EDM experiments have put strict limits and constrained the parameter spa...

1997
Ruggero Maria Santilli

Contemporary theories of antimatter have a number of insufficiencies which stimulated the recent construction of the new isodual theory based on a certain antiisomorphic map of all (classical and quantum) formulations of matter called isoduality. In this note we show that the isodual theory predicts that antimatter emits a new light, called isodual light, which can be distinguished from the ord...

2011
D. Gross F. Wilczek

The physics of the strong interactions always has been tightly connected to the study of nucleons at shorter and shorter distances. The measurement of the anomalous magnetic moments of the proton and neutron in 1933 and 1939 made clear that nucleons are no elementary particles. During the 1950ies the Hofstadter experiments revealed the charge distributions inside nucleons at scales Q ≃ 0.5 ·M N...

2002
F. Krmpotić A. Mariano A. Samana

We explain the origin of the difficulties that appear in a straightforward application of the QRPA in 12 C, and we demonstrate that it is imperative to use the projected QRPA (PQRPA). Satisfactory results, not only for the weak processes among the ground states of the triad { 12 B, 12 C, 12 N }, but also for the inclusive ones are obtained. We sketch as well a new formalism for the neutrino-nuc...

2008
F. Krmpotić A. Mariano A. Samana

We explain the origin of the difficulties that appear in a straightforward application of the QRPA in 12 C, and we demonstrate that it is imperative to use the projected QRPA (PQRPA). Satisfactory results, not only for the weak processes among the ground states of the triad { 12 B, 12 C, 12 N }, but also for the inclusive ones are obtained. We sketch as well a new formalism for the neutrino-nuc...

2013
J. S. Brown

We show that the free propagation and interactions of all fundamental particle fields can be derived from arithmetic summations over a suitably parametrized null-cone. Our approach represents a considerable simplification of the path integral formalism and leads to essentially identical results as those obtained from conventional procedures, but without using i) differential operators, ii) the ...

2014
DAVID MEHRLE

In 1969, Murray Gell-Mann won the nobel prize in physics “for his contributions and discoveries concerning the classification of elementary particles and their interactions.” He is the scientist who first used the word quark, and he was the first to describe the SU3(C) flavor symmetry of the hadrons. By organizing the particles according to the root system of the lie algebra su3(C) associated t...

Journal: :Physical review. D, Particles and fields 1995
Reznik

The gravitational interaction between a massive particle and a spinning particle in the weak-field limit is studied. We show that a system of a spinning point-like particle and a massive rod exhibit a topological effect analogous to the electromagnetic Aharonov-Casher effect. We discuss the effect also for systems with a cosmic string instead of a massive rod and in the context of 2+1-dimension...

2008

Various theories of spinning particles are interpreted as realizing elements of an underlying geometric theory. Classical particles are described by trajectories on the Poincaré group. Upon quantization an eleven-dimensional Kaluza-Klein type theory is obtained which incorporates spin and isospin in a local SL(2, C) × U(1) × SU(2) theory with broken U(1)× SU(2) part. The theories that describe ...

1995
Anni Koubek

A fundamental problem in quantum theory is to establish a connection between its local description (quantum field theory) and measurable quantities (particle masses, scattering amplitudes). In elementary particle physics one relies mostly on approximation techniques due to the non-integrable structure of the interactions. In order to gain a deeper understanding of quantum theory in general thes...

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