PCAC in Nuclear Medium and the Lovelace-Shapiro-Veneziano formula
Abstract
Description
A simple way to enforce the Adler zero condition for pion amplitudes in the nuclear medium is to use the Lovelace quantization condition but with modified Regge Slope $α'$ This latter is related to change in the gluon condensate. Increasing nuclear density leads to a relative increase in the Regge Slope $α'$ Denoting this increase by a scale factor $λ$, the drop in the $ρ$-mass, $Δ-N$ mass difference, increase in $ππ$ scattering length, decrease of pion decay constant etc. are simply related to $λ$.
11 pages LATEX
11 pages LATEX