v 2 9 F eb 1 99 4 USC ( NT ) – 94 – 1 Meson Condensation in Dense Matter
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چکیده
The results for meson condensation in the literature vary markedly depending on whether one uses chiral perturbation theory or the current-algebra-plus-PCAC approach. To elucidate the origin of this discrepancy, we reexamine the role of the sigma-term in meson condensation. We find that the resolution of the existing discrepancy requires a knowledge of terms in the Lagrangian that are higher order in density than hitherto considered.
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تاریخ انتشار 1994