منابع مشابه
Chiral Dynamics and Nuclear Matter
We calculate the equation of state of isospin-symmetric nuclear matter in the threeloop approximation of chiral perturbation theory. The contributions to the energy per particle Ē(kf ) from oneand two-pion exchange diagrams are ordered in powers of the Fermi momentum kf (modulo functions of kf/mπ). It is demonstrated that, already at orderO(k4 f ), two-pion exchange produces realistic nuclear b...
متن کاملChiral Quark Dynamics in Dense Nuclear Matter †
We consider a new approach to the description of dense nuclear matter in the framework of chirally symmetric, quark-based hadron models. As previously in the Skyrme model, the dense environment is described in terms of hyperspherical cells of unit baryon number. The intrinsic curvature of these cells generates a new gauge interaction for the quark fields which mediates interactions with the amb...
متن کاملDilute Nuclear Matter in Chiral Perturbation Theory
E. S. Fraga, Y. Hatta, R. D. Pisarski, and J. Schaffner-Bielich Laboratoire de Physique Théorique,Université Paris XI Bâtiment 210, 91405 Orsay Cedex, France Instituto de F́ısica, Universidade Federal do Rio de Janeiro C.P. 68528, Rio de Janeiro, 21941-972 RJ, Brazil Department of Physics, Kyoto University, Kyoto 606-8502, Japan The Institute of Physical and Chemical Research (RIKEN) Wako, Saita...
متن کاملS-wave Meson-Nucleon Interactions and the Meson Mass in Nuclear Matter from Chiral Effective Lagrangians
Chiral effective lagrangians may differ in their prediction of meson-nucleon scattering amplitudes off-meson-mass-shell, but must yield identical S-matrix elements. We argue that the effective meson mass in nuclear matter obtained from chiral effective lagrangians is also unique. Off-mass-shell amplitudes obtained using the PCAC choice of pion field must therefore not be viewed as fundamental c...
متن کاملS-wave Meson-nucleon Interactions and the Meson Mass in Nuclear Matter from Chiral Eeective Lagrangians
Chiral eeective lagrangians may diier in their prediction of meson-nucleon scattering amplitudes oo-meson-mass-shell, but must yield identical S-matrix elements. We argue that the eeective meson mass in nuclear matter obtained from chiral eeective lagrangians is also unique. OO-mass-shell amplitudes obtained using the PCAC choice of pion eld must therefore not be viewed as fundamental constrain...
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ژورنال
عنوان ژورنال: Nuclear Physics A
سال: 2015
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2014.09.027