155 citations · 1.3k across the 43 of their papers we have counts for
4 papers · 1 filter
Three approaches to chiral form interactions
Oleg Evnin, Karapet Mkrtchyan
We briefly review and critically compare three approaches to constructing Lagrangian theories of self-interacting Abelian chiral form fields with manifest Lorentz invariance. The f…
Democratic actions for type II supergravities
Karapet Mkrtchyan, Fridrich Valach
We present a universal democratic Lagrangian for the bosonic sector of ten-dimensional type II supergravities, treating "electric" and "magnetic" potentials of all RR fields on equ…
Nonlinear (chiral) p-form electrodynamics
Zhirayr Avetisyan, Oleg Evnin, Karapet Mkrtchyan
In our previous article Phys. Rev. Lett. 127 (2021) 271601, we announced a novel 'democratic' Lagrangian formulation of general nonlinear electrodynamics in four dimensions that fe…
Solutions in Nonlinear Electrodynamics and their double copy regular black holes
Karapet Mkrtchyan, Mantas Svazas
We study solutions in non-linear electrodynamics (NED) and establish several general results. We show, that the electric-magnetic duality symmetry is restrictive enough to…