23 citations · 129 across the 18 of their papers we have counts for
5 papers · 1 filter
Quasinormal modes of BTZ black hole and Hawking-like radiation in graphene
B. S. Kandemir, Ümit Ertem
The Bañados-Teitelboim-Zanelli (BTZ) black hole model corresponds to a solution of (2+1)-dimensional Einstein gravity with negative cosmological constant, and by a conformal rescal…
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…