20 citations · 66 across the 10 of their papers we have counts for
10 papers
Open String Gravity?
Yeuk-Kwan E. Cheung, Mark Laidlaw, Konstantin Savvidy
We present a new application of Boundary String Field Theory: calculating the induced-gravity action on a D-brane. Using a simple quadratic tachyon potential to model a D-brane flu…
Comments on Higher Derivative Terms for the Tachyon Action
Mark Laidlaw, Madoka Nishimura
We consider the open string tachyon action in a world-sheet sigma model approach. We present explicit calculations up to order 8 in derivatives for the bosonic string, and mimic th…
Stringy profiles of gauge field tadpoles near orbifold singularities: II. field theoretical implications
Stefan Groot Nibbelink, Mark Laidlaw
Recent work has provided a direct string calculation of the internal coordinate dependence of gauge field tadpoles on the orbifold C^3/Z_3. We investigate the structure of these pr…
Stringy profiles of gauge field tadpoles near orbifold singularities: I. heterotic string calculations
Stefan Groot Nibbelink, Mark Laidlaw
Closed string theories on orbifolds contain both untwisted and twisted states. The latter are normally assumed to live exactly at the orbifold fixed points. We perform a calculatio…
Tachyons, Boundary Interactions, and the Genus Expansion in String Theory
M. Laidlaw
This thesis examines the interaction of both bosonic and superstrings with various backgrounds with a view to understanding the interplay between tachyon condensation and world-she…
The Off-Shell Boundary State and Cross-Caps in the Genus Expansion of String Theory
M. Laidlaw
We use the boundary state formalism for the bosonic string to calculate the emission amplitude for closed string states from particular D-branes. We show that the amplitudes obtain…