304 citations · 2.4k across the 92 of their papers we have counts for
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Perturbative String Dynamics Near the Photon Sphere
Mariusz P. Dabrowski, Alexander A. Zheltukhin
String dynamics near the photon sphere in Schwarzschild spacetime is considered on the basis of a perturbative approach with respect to a rescaled string tension as a small paramet…
Boson Stars as Gravitational Lenses
Mariusz P. Dabrowski, Franz E. Schunck
We discuss boson stars as possible gravitational lenses and study the lensing effect by these objects made of scalar particles. The mass and the size of a boson star may vary from…
String Cosmology and Chaos
John D. Barrow, Mariusz P. Dabrowski
We investigate Bianchi type IX ''Mixmaster'' universes within the framework of the low-energy tree-level effective action for string theory, which (when the ''stringy'' 2-form axio…
Godel Universes in String Theory
John D. Barrow, Mariusz P. Dabrowski
We show that homogeneous Gödel spacetimes need not contain closed timelike curves in low-energy-effective string theories. We find exact solutions for the Gödel metric in string th…