Absence of higher order corrections to the non-Abelian Chern–Simons coefficient
نویسندگان
چکیده
منابع مشابه
Absence of higher order corrections to the non-Abelian Chern-Simons coefficient
We extend the Coleman-Hill analysis to non-Abelian Chern-Simons theories containing a tree level topological mass term. We show, in the case of a pure Yang-Mills-Chern-Simons theory, that there are no corrections to the coefficient of the Chern-Simons term beyond one loop in the axial gauge. Our arguments use constraints coming only from small gauge Ward identities as well as the analyticity of...
متن کاملAbsence of higher order corrections to the non-Abelian topological mass term
We study the Yang-Mills-Chern-Simons theory systematically in an effort to generalize the Coleman-Hill result to the non-Abelian case. We show that, while the Chern-Simons coefficient is in general gauge dependent in a non-Abelian theory, it takes on a physical meaning in the axial gauge. Using the non-Abelian Ward identities as well as the analyticity of the amplitudes in the momentum variable...
متن کاملAbsence of Higher Order Corrections to Noncommutative Chern-Simons Coupling
We analyze the structure of noncommutative pure Chern-Simons theory systematically in the axial gauge. We show that there is no IR/UV mixing in this theory in this gauge. In fact, we show, using the usual BRST identities as well as the identities following from vector supersymmetry, that this is a free theory. As a result, the tree level Chern-Simons coefficient is not renormalized. It also hol...
متن کاملHigher–Order Corrections to Instantons
The energy levels of the double-well potential receive, beyond perturbation theory, contributions which are non-analytic in the coupling strength; these are related to instanton effects. For example, the separation between the energies of oddand even-parity states is given at leading order by the one-instanton contribution. However to determine the energies more accurately multi-instanton confi...
متن کاملHigher-order Qcd Corrections to Γ
In the study of scattering phenomena in the limit of very large energies at fixed momentum transfer, one must face the fact that the two most promising probes of BFKL physics, namely smallx effects in DIS and large-rapidity-gap events in dijet production at hadron colliders, are inherently dependent upon long-distance physics, due to the presence of hadrons in the initial state; this poses seri...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics Letters B
سال: 2000
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(00)01202-8