We study D-brane inflation in a warped conifold background that includes brane-position
dependent corrections for the nonperturbative superpotential. Instead of stabilizing the …

We analyze the dynamics of a single scalar field in Friedmann-Robertson-Walker universes
with spatial curvature. We obtain the fixed point solutions which are shown to be late time …

We analyze the dynamics of a Dirac-Born-Infeld (DBI) field in a cosmological setup which
includes a perfect fluid. Introducing convenient dynamical variables, we show that the …

We revisit our earlier investigations of the brane–antibrane inflation in a warped deformed
conifold background, reported in Phys. Lett. B 674, 131 (2009), where now we include the …

We study brane inflation in a warped deformed conifold background that includes general
possible corrections to the throat geometry sourced by coupling to the bulk of a compact …

We present a novel dark-energy candidate, based upon the existence and dynamics of
ghost D-branes in a warped compactification of type IIB string theory. G p-branes cancel the …

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 …

We investigate the dynamics of a pair of coincident D5 branes in the background of k NS5
branes. It has been proposed by Kutasov that the system with a single probing D-brane …

The dynamics of a tachyon field plus a barotropic fluid is investigated in spatially curved
FRW universe. We perform a phase-plane analysis and obtain scaling solutions …

We investigate the black hole-string transition in the two-dimensional Lorentzian black hole
system from the exact boundary states that describe the rolling D-brane falling down into the …