ar X iv : h ep - t h / 99 07 21 7 v 1 2 9 Ju l 1 99 9 HD – THEP – 99 – 24 Master Equation for Lagrangian Gauge Symmetries
نویسندگان
چکیده
Using purely Hamiltonian methods we derive a simple differential equation for the generator of the most general local symmetry transformation of a Lagrangian. The restrictions on the gauge parameters found by earlier approaches are easily reproduced from this equation. We also discuss the connection with the purely Lagrangian approach. The general considerations are applied to the Yang-Mills theory.
منابع مشابه
ar X iv : h ep - t h / 99 06 07 2 v 1 9 J un 1 99 9 HD – THEP – 99 – 11 Hamiltonian Approach to Lagrangian Gauge Symmetries
We reconsider the problem of finding all local symmetries of a La-grangian. Our approach is completely Hamiltonian without any reference to the associated action. We present a simple algorithm for obtaining the restrictions on the gauge parameters entering in the definition of the generator of gauge transformations.
متن کاملar X iv : h ep - t h / 99 06 07 2 v 2 1 0 Ju n 19 99 HD – THEP – 99 – 17 Hamiltonian Approach to Lagrangian Gauge Symmetries
We reconsider the problem of finding all local symmetries of a La-grangian. Our approach is completely Hamiltonian without any reference to the associated action. We present a simple algorithm for obtaining the restrictions on the gauge parameters entering in the definition of the generator of gauge transformations.
متن کاملar X iv : h ep - t h / 99 07 14 9 v 1 1 7 Ju l 1 99 9 Non linear σ models : renormalisability versus geometry . ∗
After some recalls on the standard (non)-linear σ model, we discuss the interest of B.R.S. symmetry in non-linear σ models renormalisation. We also emphasise the importance of a correct definition of a theory through physical constraints rather than as given by a particular Lagrangian and discuss some ways to enlarge the notion of renormalisability. PAR/LPTHE/99-27/hep-th/xxx July 99 Talk given...
متن کاملar X iv : h ep - t h / 96 11 04 5 v 1 7 N ov 1 99 6 Multiloop Feynman Integrals in the Worldline Approach ∗
We explain the concept of worldline Green functions on classes of multiloop graphs. The QED β – function and the 2-loop Euler-Heisenberg Lagrangian are discussed for illustration. HD-THEP-96/44 HUB-EP-96/29 ∗Talk presented by M.G.Schmidt at the Dubna Joint Meeting: International Seminar on Path Integrals: Theory and Applications, and 5th International Conference on Path Integrals from meV to Me...
متن کاملar X iv : h ep - p h / 99 05 24 9 v 2 1 2 M ay 1 99 9 BI - TP 99 / 12 Two - loop self - energy master integrals on shell
Analytic results for the complete set of two-loop self-energy master integrals on shell with one mass are calculated.
متن کامل