2 papers
hep-ph1995
Convergence of the Optimized Delta Expansion for the Connected Vacuum Amplitude -- Anharmonic Oscillator
C. Arvanitis, H. F. Jones, C. S. Parker
The convergence of the linear expansion for the connected generating functional of the quantum anharmonic oscillator is proved. Using an order-dependent scaling for the variati…
hep-ph1994
Extended Variational Approach to the SU(2) Mass Gap on the Lattice
J. O. Akeyo, H. F. Jones, C. S. Parker
The linear delta expansion is applied to a calculation of the SU(2) mass gap on the lattice. Our results compare favourably with the strong-coupling expansion and are in good agree…