An extension of the Linear Delta Expansion to Superspace

Abstract

We introduce and discuss the method of Linear Delta Expansion for the calculation of effective potentials in superspace, by adopting the improved version of the super-Feynman rules. Calculations are carried out up to two-loops and an expression for the optimized Kähler potential is worked out.

arXiv comment13 pages, revtex4

References in corpus (5)

• Exact Superpotentials in Four Dimensions
• Emergence of Tricritical Point and Liquid-Gas Phase in the Massless 2+1 Dimensional Gross-Neveu Model
• High Temperature Resummation in the Linear $\delta$-Expansion
• Asymptotically Improved Convergence of Optimized Perturbation Theory in the Bose-Einstein Condensation Problem
• Critical and Tricritical Points for the Massless 2d Gross-Neveu Model Beyond Large N

Cited by in corpus (8)

• Finite size effects in the Gross-Neveu model with isospin chemical potential
• Optimized perturbation theory for charged scalar fields at finite temperature and in an external magnetic field
• Applicability of the Linear delta Expansion for the lambda phi^4 Field Theory at Finite Temperature in the Symmetric and Broken Phases
• Reliability of the optimized perturbation theory in the 0-dimensional $O(N)$ scalar field model
• Linear delta expansion applied to the O'Raifeartaigh model
• Superspace approach to the renormalization of the O'Raifeartaigh model up to the second order in the LDE parameter
• Supergraph Approach in a Higher-order LDE Calculation of the Effective Potential for F-type Broken SUSY
• Casimir energy for the scalar field: a global approach with cut-off exponential function