A Nonperturbative treatment of the pion in the linear sigma model
Apr, 1996
16 pages
Published in:
- Nucl.Phys.A 603 (1996) 458-470
e-Print:
- nucl-th/9604023 [nucl-th]
Report number:
- IKDA-96-9
Citations per year
Abstract:
Using a non-perturbative method based on the selfconsistent Quasi-particle Random-Phase Approximation (QRPA) we describe the properties of the pion in the linear -model. It is found that the pion is massless in the chiral limit, both at zero- and finite temperature, in accordance with Goldstone's theorem.Note:
- To appear in Nucl.Phys. A, 16 pages, 2 Postscript figures Report-no: IKDA 96/9
- pi: model
- sigma model: linear
- mean field approximation
- random phase approximation
- pi: mass
- mass: pi
- finite temperature
- Goldstone theorem
- spontaneous symmetry breaking
- critical phenomena: chiral
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