𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The renormalization group and two dimensional multicritical effective scalar field theory

✍ Scribed by Tim R. Morris

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
879 KB
Volume
345
Category
Article
ISSN
0370-2693

No coin nor oath required. For personal study only.

πŸ“œ SIMILAR VOLUMES

Effects of the Chemical Potential in two
Effects of the Chemical Potential in two-dimensional Quantum Field Theories
✍ Soraya G. Maciel; Silvana Perez; C. Rocha πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 170 KB

In this talk we study the effects of a nonzero chemical potential in (1 + 1) dimensions quantum field models at finite temperature. We start by considering massless fermions in an abelian gauge field background and calculate the n-point amplitudes using the real time formalism. Our calculation shows

Optimized Expansion for the Effective Ac
Optimized Expansion for the Effective Action and Multi-particle States in the Scalar Quantum Field Theory
✍ A. Okopinska πŸ“‚ Article πŸ“… 1993 πŸ› Elsevier Science 🌐 English βš– 768 KB

The optimized expansion for the effective action in quantum field theory is discussed to second order. As an example we use the scalar quantum field theory with \(\lambda \phi^{4}\) interaction in one-dimensional space-time, which is equivalent to quantum mechanics of the anharmonic ascillator. The

Functional renormalization group beyond
Functional renormalization group beyond the static approximation and its application to the two-dimensional Hubbard model
✍ Hirokazu Takashima; Ryotaro Arita; Kazuhiko Kuroki; Hideo Aoki πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 240 KB

While the functional renormalization group is a powerful theoretical method, the static approximation has been usually adopted in which the Matsubara frequency dependence of vertex functions is ignored. We propose a formalism beyond the static approximation with an efficient parameterization in the