Dynamical Pion Propagation in the Functional Approach to the Charge Response - INSPIRE

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Dynamical Pion Propagation in the Functional Approach to the Charge Response

W.M. Alberico
(
- Turin U. and
- INFN, Turin
)
,
R. Cenni
(
- Genoa U. and
- INFN, Genoa
)
,
A. Molinari
(
- Turin U. and
- INFN, Turin
)
,
P. Saracco
(
- Genoa U. and
- INFN, Genoa
)

Nov, 1989

13 pages

Published in:

Phys.Rev.Lett. 65 (1990) 1845-1848

DOI:

10.1103/PhysRevLett.65.1845

Report number:

GEF-TH-13-1989

View in:

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Abstract: (APS)

We calculate the charge response to an electromagnetic field for a homogeneous system of nucleons and pions in the functional framework. This requires dealing with the pion propagation in the medium within the random-phase-approximation scheme. A quenching of the response is obtained in line with the experimental findings. Remarkably, the quenching takes place mainly in the isoscalar channel.

pi nucleon: interaction
interaction: pi nucleon
electromagnetic field: external field
structure function: charge
pi: propagator
path integral
Feynman graph: higher-order
Fermi gas
random phase approximation
fermion: liquid

References(11)

Figures(0)

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)
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)

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