In this paper we study general properties of non-commutative field theories obtained from
the Seiberg–Witten limit of string theories in the presence of an external B-field. We analyze …

In this paper the stationary Klein–Gordon equation is considered for the Coulomb potential
in noncommutative space. The energy shift due to noncommutativity is obtained via the …

We study some consequences of noncommutativity to homogeneous cosmologies by
introducing a deformation of the commutation relation between the minisuperspace …

The theory of supersymmetric quantum electrodynamics is extended by interactions with
external vector and tensor backgrounds, that are assumed to be generated by some Lorentz …

Colladay and Kostelecký have proposed a framework for studying Lorentz and CPT violation
in a natural extension of the standard model. Although numerous bounds exist on the …

Extensions of the Standard Model of elementary particle physics to noncommutative
geometries have been proposed as a low-energy limit of string models. Independent of this …

We give an overview of ongoing searches for effects motivated by the study of the quantum‐
gravity problem. We describe in greater detail approaches which have not been covered in …

A four-dimensional Lorentz-breaking non-Abelian Chern-Simons-like action is generated as
a one-loop perturbative correction via an appropriate Lorentz-breaking coupling of the non …

We investigate the effect of Lorentz-violating terms on Bhabha scattering in two distinct
cases correspondent to vectorial and axial nonminimal couplings in quantum …

We show that noncommutative gauge theories with arbitrary compact gauge group defined
by means of the Seiberg-Witten map have the same one-loop anomalies as their …