Higher Dimensional Operators in Top Condensation from a Renormalization Group Point of View
نویسندگان
چکیده
The predictive power of top–condensation models strongly depends on the behaviour of higher dimensional operators. These are analyzed in this paper by an extension of the standard renormalization group (RG) arguments which turns out to be a surprisingly powerful tool. Top–condensation models intermediated by underlying scalar exchange can be shown to be mere reparametrizations of the standard model. Further on, RG–arguments show that dynamical vector states cannot be lowered in top–condensation models. Finally we give a general argument concerning the size of higher dimensional operators of heavy vector exchange. Email: [email protected] Email: [email protected] Email: [email protected]
منابع مشابه
A numerical renormalization group approach for calculating the spectrum of a vibronic system occurring in molecules or impurities in insulators
Theoretically, in order to describe the behavior of a spectrum, a mathematical model whichcould predict the spectrum characteristics is needed. Since in this study a Two-state system has beenused like models which was introduced previously past and could couple with the environment, theformer ideas have been extended in this study. we use the second quantized version for writing thisHamiltonian...
متن کاملA NUMERICAL RENORMALIZATION GROUP APPROACH FOR AN ELECTRON-PHONON INTERACTION
A finite chain calculation in terms of Hubbard X-operators is explored by setting up a vibronic Harniltonian. The model conveniently transformed into a form so that in the case of strong coupling a numerical renormalization group approach is applicable. To test the technique, a one particle Green function is calculated for the model Harniltonian
متن کاملTime-Dependent Real-Space Renormalization Group Method
In this paper, using the tight-binding model, we extend the real-space renormalization group method to time-dependent Hamiltonians. We drive the time-dependent recursion relations for the renormalized tight-binding Hamiltonian by decimating selective sites of lattice iteratively. The formalism is then used for the calculation of the local density of electronic states for a one dimensional quant...
متن کاملep - p h / 96 06 38 6 v 1 1 9 Ju n 19 96 Top Quark and Higgs Boson Masses : Interplay between Infrared and Ultraviolet Physics
We review recent efforts to explore the information on masses of heavy matter particles, notably of the top quark and the Higgs boson, as encoded at the quantum level in the renormalization group equations. The Standard Model (SM) and the Minimal Supersymmetric Standard Model (MSSM) are considered in parallel throughout. First, the question is addressed to which extent the infrared physics of t...
متن کاملComparative Analysis of Dimensional Accuracy of Two Types of Silicone Impression Materials: Optosil and Elite-HD
Statement of the Problem: Understanding about impression materials, their properties, uses and manipulation can guide operators towards having more successful restorations. Purpose: The aim of this in vitro study was to compare the accuracy of a condensation silicone impression material, Optosil, and an addition poly siloxane impression material, Elite-HD. Materials and Method: A laboratory mod...
متن کامل