My research involves mainly quantum field theory, gravitation, and cosmology. Recent
1) stringy Born-Infeld electrodynamics - a way to measure the string coupling constant
by means of light-deflection observations. 2) Evaporation of quantum-corrected Reissner Nordstrom black holes. 3) Non-singular black holes - black holes with regular cores supported by nonlinear
EM fields. 4) Accelerated observers and non-thermal vacuum states. 5) loop quantum gravity cosmology.