Testing Non - commutative QED , Constructing Non - commutative MHD

نظریه میدان ناجابه‌جایی و پارامترهای نقض لورنتس در QED

Non-commutative field theory as a theory including the Lorentz violation can be constructed in two different ways. In the first method, the non-commutative fields are the same as the ordinary ones while the gauge group is restricted to U(n). For example, the symmetry group of standard model in non-commutative space is U(3)×(2)×U(1) which can be reduced to SU(3)×SU(2)×U(1) by two appropriate spo...

Background field quantization and non-commutative QED

We quantize non-commutative QED canonically in the background field gauge for weak and slowly varying background fields. We determine the complete basis for expansion under such an approximation. As an application, we derive the Wigner function which determines the leading order high temperature behavior of the perturbative amplitudes of non-commutative QED. To leading order, we also give a clo...

Signals for Non - Commutative Interactions at Linear Colliders ∗

Recent theoretical results have demonstrated that non-commutative geometries naturally appear within the context of string/M-theory. One consequence of this possibility is that QED takes on a non-abelian nature due to the introduction of 3and 4-point functions. In addition, each QED vertex acquires a momentum dependent phase factor. We parameterize the effects of non-commutative space-time co-o...

Axial Anomaly in Non-Commutative QED on R

The axial anomaly of the non-commutative QED is calculated by a number of methods and compared with the commutative one. It is found to be given by the corresponding Chern class. PACS No.: 11.15.Bt, 11.10.Gh, 11.25.Db

Testing Non–commutative QED γγγ and γγγγ Couplings at LHC