23 citations · 96 across the 15 of their papers we have counts for
8 papers · 1 filter
Motion of membranes in space-times with torsion
Özgür Açık, Aytolun Çatalkaya, Ümit Ertem +1
The motion of membranes interacting with external fields in space-times with curvature and torsion is considered. The intrinsic and extrinsic properties of the immersion are fused…
Spin-1/2 and spin-3/2 field solutions in plane wave spacetimes
Özgür Açık
We have found two non-trivial massless Dirac and two massive Rarita-Schwinger solutions in plane wave spacetimes. The first order symmetry operator transforming one of the massless…
Field equations from Killing spinors
Özgür Açık
From the Killing spinor equation and the equations satisfied by their bilinears we deduce some well known bosonic and fermionic field equations of mathematical physics. Aside from…
Couplings of gravitational currents with Chern-Simons gravities
Ümit Ertem, Özgür Açık
The coupling of conserved p-brane currents with non-Abelian gaugetheories is done consistently by using Chern-Simons forms. Conserved currents localized on p-branes that have a gra…
Generalized Chern-Simons Modified Gravity in First-Order Formalism
Ümit Ertem, Özgür Açık
We propose a generalization of Chern-Simons (CS) modified gravity in first-order formalism. CS modified gravity action has a term that comes from the chiral anomaly which is Pontry…
Basic Gravitational Currents and Killing-Yano Forms
Ö. Açık, Ü. Ertem, M. Önder +1
It has been shown that for each Killing-Yano (KY)-form accepted by an -dimensional (pseudo)Riemannian manifold of arbitrary signature, two basic gravitational currents can be de…
First-order symmetries of Dirac equation in curved background: a unified dynamical symmetry condition
Ö. Açık, Ü. Ertem, M. Önder +1
It has been shown that, for all dimensions and signatures, the most general first-order linear symmetry operators for the Dirac equation including interaction with Maxwell field in…
Killing-Yano Forms of a Class of Spherically Symmetric Space-Times II: A Unified Generation of Higher Forms
O. Acik, U. Ertem, M. Onder +1
Killing-Yano (KY) two and three forms of a class of spherically symmetric space-times that includes the well-known Minkowski, Schwarzschild, Reissner-Nordstrom, Robertson-Walker an…