Gaussian effective potential in variational perturbation theory
β Scribed by A.N. Sissakian; I.L. Solovtsov; O.Yu. Shevchenko
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 406 KB
- Volume
- 313
- Category
- Article
- ISSN
- 0370-2693
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π SIMILAR VOLUMES
The coordinate probability distribution function for a one-dimensional anharmonic oscillator is derived by application of the effective harmonic oscillator (EHO) density matrix in first-order thermodynamic perturbation theory. The practical utility of this approach is demonstrated by the calculation
## Abstract Using the variational principle, equations have been obtained for density matrix of molecules with the external perturbation of the common type present. The perturbed wave function was taken as a superposition of the ground and singleβexcited configurations made of the HartreeβFock mole
The static potential constitutes a fundamental quantity of Quantum Chromodynamics. It has recently been evaluated to three-loop accuracy. In this contribution we provide details on the calculation and present results for the 14 master integrals which contain a massless one-loop insertion.