Relativistic quantum field approach to nuclear matter and nuclei

1981 ◽  
pp. 60-68 ◽  
Author(s):  
M. Jaminon ◽  
C. Mahaux
Keyword(s):  
Nuclear Matter ◽  
Relativistic Quantum ◽  
Quantum Field ◽  
Field Approach

scholarly journals A phase-space noncommutative picture of nuclear matter

2015 ◽  
Vol 30 (32) ◽  
pp. 1550191 ◽  
Author(s):  
Orfeu Bertolami ◽  
Hodjat Mariji
Keyword(s):  
Phase Space ◽  
Nuclear Matter ◽  
Relativistic Quantum ◽  
Theory Model ◽  
Nuclear Model ◽  
Quantum Field ◽  
Relativistic Quantum Field Theory ◽  
Momentum Scale ◽  
Space Noncommutativity ◽  
Noncommutative Parameter

Noncommutative features are introduced into a relativistic quantum field theory model of nuclear matter, the quantum hadrodynamics-I nuclear model (QHD-I). It is shown that the nuclear matter equation of state (NMEoS) depends on the fundamental momentum scale, [Formula: see text], introduced by the phase-space noncommutativity (NC). Although it is found that NC geometry does not affect the nucleon fields up to [Formula: see text], it affects the energy density, the pressure and other derivable quantities of the NMEoS, such as the nucleon effective mass. Under the conditions of saturation of the symmetric NM under consideration, the estimated value for the noncommutative parameter is [Formula: see text].

Quantum mechanics

2018 ◽  
Author(s):  
Michael Kachelriess
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Quantum Mechanics ◽  
Relativistic Quantum ◽  
Transition Amplitude ◽  
External Source ◽  
Quantum Field ◽  
Damping Term ◽  
Relativistic Quantum Theory ◽  
Generating Functional

After a brief review of the operator approach to quantum mechanics, Feynmans path integral, which expresses a transition amplitude as a sum over all paths, is derived. Adding a linear coupling to an external source J and a damping term to the Lagrangian, the ground-state persistence amplitude is obtained. This quantity serves as the generating functional Z[J] for n-point Green functions which are the main target when studying quantum field theory. Then the harmonic oscillator as an example for a one-dimensional quantum field theory is discussed and the reason why a relativistic quantum theory should be based on quantum fields is explained.

NUCLEAR MATTER WITH CONSTITUENT MESON QUANTA

1990 ◽  
Vol 05 (17) ◽  
pp. 3391-3399 ◽  
Author(s):  
AMRUTA MISHRA ◽  
H. MISHRA ◽  
S.P. MISRA
Keyword(s):  
Field Theory ◽  
Nuclear Matter ◽  
Mass Shell ◽  
Mean Field ◽  
S Wave ◽  
Field Approach ◽  
Physical Insight ◽  
The Mean

We discuss here some nonperturbative techniques of field theory, where we dress nuclear matter as a whole with off-mass-shell pions. Here s-wave pion pairs simulate the effect of σ-meson of the mean field approach of Walecka. The signatures are in agreement with earlier results along with new physical insight.

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