Using a non-perturbative method based on the self-consistent quasi-particle random-phase approximation (QRPA) we describe the properties of the pion in the ...

Apr 16, 1996 · Abstract: Using a non-perturbative method based on the selfconsistent Quasi-particle Random-Phase Approximation (QRPA) we describe the ...

Using a non-perturbative method based on the selfconsistent Quasi-particle Random-Phase Approximation (QRPA) we describe the properties of the pion in the ...

Jun 24, 1996 · Using a non-perturbative method based on the self-consistent quasi-particle random-phase approximation (QRPA) we describe the properties of ...

Apr 16, 1996 · Semantic Scholar extracted view of "A non-perturbative treatment of the pion in the linear σ-model" by Z. Aouissat et al.

Aouissat, Zoheir ; Chanfray, G. ; Schuck, P. ; Wambach, J. (1996) A non-perturbative treatment of the pion in the linear Sigma-model. In: Nuclear physics A, ...

We present a non-perturbative method for the study of the O(N+1)-version of the linear sigma-model. Using boson-mapping techniques, in close analogy to ...

Apr 28, 2020 · We calculate the neutral pion mass in the presence of an external magnetic field of arbitrary strength in the framework of the linear sigma model coupled to ...

be treated perturbatively and consequently the results obtained from the δ- expansion (13) are non-perturbative in the physical parameters of the theory.

broken chiral symmetry and, hence, as a model to describe pions. in that ... 16.6 The O(N) non-linear sigma model in perturbation theory. All non-linear ...