This title appears in the Scientific Report :
2010
Please use the identifier:
http://dx.doi.org/10.1088/0954-3899/37/1/015106 in citations.
Please use the identifier: http://hdl.handle.net/2128/13312 in citations.
Chiral Effective Field Theory for Nuclear Matter with long- and short-range Multi-Nucleon Interactions
Chiral Effective Field Theory for Nuclear Matter with long- and short-range Multi-Nucleon Interactions
We derive a novel chiral power counting scheme for in-medium chiral perturbation theory with explicit nucleonic and pionic degrees of freedom coupled to external sources. It allows for a systematic expansion taking into account local as well as pion-mediated inter-nucleon interactions. Based on this...
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Personal Name(s): | Oller, J.A. |
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Lacour, A. / Meißner, U.-G. | |
Contributing Institute: |
Theorie der starken Wechselwirkung; IKP-3 JARA - HPC; JARA-HPC |
Published in: | Journal of physics / G, 37 (2010) S. 015106 |
Imprint: |
Bristol
IOP Publ.
2010
|
Physical Description: |
015106 |
DOI: |
10.1088/0954-3899/37/1/015106 |
Document Type: |
Journal Article |
Research Program: |
Physik der Hadronen und Kerne |
Series Title: |
Journal of Physics G-Nuclear and Particle Physics
37 |
Subject (ZB): | |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/13312 in citations.
We derive a novel chiral power counting scheme for in-medium chiral perturbation theory with explicit nucleonic and pionic degrees of freedom coupled to external sources. It allows for a systematic expansion taking into account local as well as pion-mediated inter-nucleon interactions. Based on this power counting, one can identify classes of non-perturbative diagrams that require a resummation. Within this scheme, the pion self-energy in asymmetric nuclear matter is analyzed and calculated up-to-and-including next-to-leading order (NLO). It is shown that the corrections involving in-medium nucleon-nucleon interactions cancel between each other at NLO. As a result, there are no corrections up to this order to the linear density approximation for the in-medium pion self-energy. |