Critical Exponents for Charged and Neutral Bose Gases aboveλPoints

Critical behavior and exponents above the λ-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 to O(1/m), where d is the dimension and m the number of components of the Bose field. Some results for arbitrary m to O(ε²)(ε=4-d) are also obtained.