activity
19932022
most citedHydrogen Atom Spectrum and the Lamb Shift in Noncommutative QED

673 citations · 3.6k across the 100 of their papers we have counts for

collaborators

98 papers

hep-th2022★ 3 cited

Axionic and nonaxionic electrodynamics in plane and circular geometry

Iver Brevik, Amedeo M. Favitta, Masud Chaichian

Various aspects of axion electrodynamics in the presence of a homogeneous and isotropic dielectric medium are discussed. 1. We consider first the "antenna-like" property of a plana…

hep-th2021★ 3 cited

Spin-1/2 "bosons'' with mass dimension 3/2 and fermions with mass dimension 1 cannot represent physical particle states

A. R. Aguirre, M. M. Chaichian, B. A. Couto e Silva +1

We delve into the first principles of quantum field theory to prove that the so-called spin-1/2 ''bosons'' and the fermions with mass dimension 1, including ELKO, cannot represent…

hep-th2021★ 2 cited

Seiberg-Witten Map with Lorentz-Invariance and Gauge-Covariant Star Product

M. Chaichian, M. N. Mnatsakanova, M. Oksanen

We develop the Seiberg-Witten map using the gauge-covariant star product with the noncommutativity tensor . The latter guarantees the Lorentz invariance of the theory. T…

astro-ph.HE2021★ 1 cited

Can the gamma-ray bursts travelling through the interstellar space be explained without invoking the drastic assumption of Lorentz invariance violation?

Masud Chaichian, Iver Brevik, Markku Oksanen

Experimental observations indicate that gamma-ray bursts (GRB) and high-energy neutrino bursts may travel at different speeds with a typical delay measured at the order of hours or…

astro-ph.HE2021★ 12 cited

Dispersion of Light Traveling through the Interstellar Space, Induced and Intrinsic Lorentz Invariance Violation

Iver Brevik, Masud Chaichian, Markku Oksanen

Theoretical models and experimental observations suggest that gamma-ray bursts (GRB) and high-energy neutrino bursts travelling through the interstellar space may reach the Earth a…

gr-qc2020★ 2 cited

Remarks on the Abraham-Minkowski problem, from the formal and from the experimental side

Iver Brevik, Masud Chaichian, Ion I. Cotăescu

We analyze the Abraham-Minkowski problem known from classical electrodynamics from two different perspectives. First, we follow a formal approach, implying use of manifolds with cu…