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4 papers · 2 filters
Closed string tachyon potential and equation
Sunggeun Lee, Sang-Jin Sin
Recently Dabholkar and Vafa proposed that closed string tachyon potential for non-supersymmetric orbifold $\C/\Z_3$ in terms of the solution of a equation. We extend this re…
Holography of Radiation and Jet Quenching
Sang-Jin Sin, Ismail Zahed
We study the non-linear propagation of radiation in {\cal N=4} SYM at zero and finite temperature using the refined radius/scale duality in AdS/CFT. We argue that a pulse radiation…
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…
Localized tachyon condensation and G-parity conservation
Sunggeun Lee, Sang-Jin Sin
We study the condensation of localized tachyon in non-supersymmetric orbifold ${\C^2/\Z_n}$. We first show that the G-parities of chiral primaries are preserved under the condensat…