58 citations · 153 across the 7 of their papers we have counts for
7 papers
Geometrical Tachyon Dynamics in the Background of a Bulk Tachyon Field
Eleftherios Papantonopoulos, Ioanna Pappa, Vassilios Zamarias
We study the dynamics of a D3-brane moving in the background of a bulk tachyon field of a D3-brane solution of Type-0 string theory. We show that the dynamics on the probe D3-brane…
The geometry of wrapped M5-branes in Calabi-Yau 2-folds
Ansar Fayyazuddin, Tasneem Zehra Husain, Ioanna Pappa
We study the geometry of M5-branes wrapping a 2-cycle which is Special Lagrangian with respect to a specific complex structure in a Calabi-Yau two-fold. Using methods recently appl…
Spherically Symmetric Braneworld Solutions with R_{4} term in the Bulk
G. Kofinas, E. Papantonopoulos, I. Pappa
An analysis of a spherically symmetric braneworld configuration is performed when the intrinsic curvature scalar is included in the bulk action; the vanishing of the electric part…
Cosmological Evolution of a Brane Universe in a Type 0 String Background
I. Pappa
We study the cosmological evolution of a D3-brane Universe in a type 0 string background. We follow the brane universe along the radial coordinate of the background and we calculat…
Cosmological Evolution in a Type-0 String Theory
G. A. Diamandis, B. C. Georgalas, N. E. Mavromatos +2
We study the cosmological evolution of a type-0 string theory by employing non-criticality, which may be induced by fluctuations of the D3 brane worlds. We check the consistency of…
Inflation Induced by Vacuum Energy and Graceful Exit from it
E. Papantonopoulos, I. Pappa
Motivated by brane cosmology we solve the Einstein equations with a time dependent cosmological constant. Assuming that at an early epoch the vacuum energy scales as , we…