Critical Exponents for Charged and Neutral Bose Gases aboveλPoints

Critical behavior and exponents above the $\lambda$-transition points in charged and neutral Bose systems are examined with emphasis on the correlation of density fluctuations. Exponents are calculated with Wilson's expansion methods for arbitrary $d \mathrm{to} O\left(\frac{1}{m}\right)$, where $d$ is the dimension and $m$ the number of components of the Bose field. Some results for arbitrary $m \mathrm{to} O\left({\epsilon }^2\right)(\epsilon =4-d)$ are also obtained.