Composite and elementary particles with the same quantum numbers in quantum field theory

1971 ◽  
Vol 8 (1) ◽  
pp. 654-662 ◽  
Author(s):  
M. A. Braun ◽  
A. G. Izergin
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Elementary Particles ◽  
Quantum Field ◽  
Quantum Numbers

The Norms of Multimass States in Relativistic Quantum Field Theory

1974 ◽  
Vol 52 (20) ◽  
pp. 1988-1994 ◽  
Author(s):  
Roger Palmer ◽  
Yasushi Takahashi
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Relativistic Quantum ◽  
Bound State ◽  
Quantum Field ◽  
Relativistic Quantum Field Theory ◽  
Negative Norm ◽  
Quantum Numbers ◽  
Multimass System ◽  
Dynamical Origin

We examined the problem of the appearance of negative norm states in multimass models. It is shown explicitly how the bound state with the same quantum numbers as the elementary meson, can acquire the positive norm. It is inferred from our argument that the multimass system of dynamical origin can be quantized without the negative norm, contrary to the multimass system of kinematical origin.

A Concept of Explaining the Properties of Elementary Particles in Terms of Manifolds

1974 ◽  
Vol 29 (10) ◽  
pp. 1407-1417
Author(s):  
Julian Ławrynowicz ◽  
Leszek Wojtczak
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Riemannian Manifold ◽  
Riemannian Manifolds ◽  
Hilbert Spaces ◽  
Elementary Particles ◽  
Quantum Field ◽  
Satisfactory Explanation ◽  
The Moment ◽  
Physical Phenomena

Abstract The authors propose to explain the magnetic moment of elementary particles by a suitable choice of one pseudo-riemannian manifold - the space of observations - and two general Riemannian manifolds - the spaces of the particle connected with the external electromagnetic and nuclear fields, respectively. By a general Riemannian manifold the authors understand a Riemannian manifold whose associated tensor field is allowed to be degenerate. In this way the mass of a particle as well as its electromagnetic and nuclear properties are determined by means of manifolds and mappings between the corresponding Hilbert spaces. A nuclear reaction is then to be interpreted as a mapping between the corresponding pseudo-riemannian manifolds and the associated general Riemannian manifolds. The proposal, competitive to the quantum field theory, presents a different way of describing the properties of physical objects. At the moment it is difficult to decide whether this proposal will lead to a satisfactory explanation of more physical phenomena than those explained by means of the quantum field theory, since it needs further research.

What is a quark?

2015 ◽  
Vol 30 (01) ◽  
pp. 1530006
Author(s):  
Gordon L. Kane ◽  
Malcolm J. Perry
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Elementary Particles ◽  
Quantum Field ◽  
Gauge Bosons ◽  
Fundamental Particles ◽  
M Theory ◽  
Theory Paradigm ◽  
The Way

We are used to thinking of quarks as fundamental particles in the same way we think of the electron, or gauge bosons, neutrinos, leptons. In strong theory, these objects are unified with gravitation and the physics of spacetime into what is hoped to be an ultimate theory, string/M theory. The string/M theory paradigm completely changes the way we think of the so-called elementary particles in quantum field theory.

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