67 citations · 127 across the 5 of their papers we have counts for
4 papers · 1 filter
Acceleration of the Universe in Type-0 Non-Critical Strings
G. A. Diamandis, B. C. Georgalas, N. E. Mavromatos +1
Presently there is preliminary observational evidence that the cosmological constant might be non zero, and hence that our Universe is eternally accelerating (de Sitter). This pose…
On the Stability of the Classical Vacua in a Minimal SU(5) 5-D Supergravity Model
G. A. Diamandis, B. C. Georgalas, P. Kouroumalou +1
We consider a five-dimensional supergravity model with SU(5) gauge symmetry and the minimal field content. Studying the arising scalar potential we find that the gauging of the $U(…
Backreaction Effects in the Two-Dimensional Dilaton Gravity
C. Chiou-Lahanas, G. A. Diamandis, B. C. Georgalas +2
In this work we find static black hole solutions in the context of the two-dimensional dilaton gravity, which is modified by the addition of an term. This term arises from th…
Tachyon Field Quantization and Hawking Radiation
C. Chiou-Lahanas, G. A. Diamandis, B. C. Georgalas +2
We quantize the tachyon field in a static two dimensional dilaton gravity black hole background,and we calculate the Hawking radiation rate. We find that the thermal radiation flux…