https://doi.org/10.1140/epjc/s10052-007-0272-0
Regular Article - Theoretical Physics
Nucleon propagation through nuclear matter in chiral effective field theory
1
Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata, 700 064, India
2
Theory Divison, Physical Research Laboratory, Ahmedabad, 380 009, India
* e-mail: mallik@theory.saha.ernet.in
Received:
17
January
2007
Revised:
23
February
2007
Published online:
4
April
2007
We treat the propagation of a nucleon in nuclear matter by evaluating the ensemble average of the two-point function of the nucleon currents in the framework of chiral effective field theory. We first derive the effective parameters of the nucleon to one loop. The resulting formula for the effective mass has been known since before and gives an absurd value at normal nuclear density. We then modify it following Weinberg’s method for the two-nucleon system in the effective theory. Our results for the effective mass and the width of the nucleon are compared with those in the literature.
© Springer-Verlag Berlin Heidelberg, 2007
