27 citations · 57 across the 8 of their papers we have counts for
13 papers · 1 filter
Negative-Tension Branes and Tensionless 1/2 Brane in Boundary Conformal Field Theory
Akira Ishida, Chanju Kim, Yoonbai Kim +1
In the framework of boundary conformal field theory we consider a flat unstable D-brane in the presence of a large constant electromagnetic field. Specifically, we study the cas…
Lower Dimensional Branes in Boundary Conformal Field Theory
Akira Ishida, Yoonbai Kim, Chanju Kim +1
In the presence of constant background electromagnetic fields, we discuss three types of exactly marginal boundary tachyon operators for static kinks in boundary conformal field th…
Relativistic Dynamics of Multi-BPS D-vortices and Straight BPS D-strings
Inyong Cho, Taekyung Kim, Yoonbai Kim +1
Moduli space dynamics of multi-D-vortices from D2 (equivalently, parallel straight D-strings from D33) is systematically studied. For the BPS D-vort…
BPS Limit of Multi- D- and DF-strings in Boundary String Field Theory
Gyungchoon Go, Akira Ishida, Yoonbai Kim
A BPS limit is systematically derived for straight multi- D- and DF-strings from the D3D3bar system in the context of boundary superstring field theory. The BPS limit is obtained i…
Cosmic D- and DF-strings from D3Dbar3: Black Strings and BPS Limit
Taekyung Kim, Yoonbai Kim, Bumseok Kyae +1
We study D- and DF-strings in a D3 system by using Dirac-Born-Infeld type action. In the presence of an electric flux from the transverse direction, we discuss gra…
Unstable D-branes and String Cosmology
Chanju Kim, Hang Bae Kim, Yoonbai Kim +2
Cosmological implication of rolling tachyons is reported in the context of effective field theory. With a brief review of rolling tachyons in both flat and curved spacetimes, we st…