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hep-th1998
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…
gr-qc1998
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…