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7 papers · 2 filters
Behavior of tachyon in string cosmology based on gauged WZW model
Sunggeun Lee, Soonkeon Nam
We investigate a string theoretic cosmological model in the context of the gauged Wess-Zumino-Witten model. Our model is based on a product of non-compact coset space and a spectat…
M-brane bound states and the supersymmetry of BPS solutions in the Bagger-Lambert theory
Imtak Jeon, Jongwook Kim, Nakwoo Kim +2
We continue our study of BPS equations and supersymmetric configurations in the Bagger-Lambert theory. The superalgebra allows three different types of central extensions which cor…
AdS Solutions Through Transgression
Aristomenis Donos, Jerome P. Gauntlett, Nakwoo Kim
We present new classes of explicit supersymmetric AdS_3 solutions of type IIB supergravity with non-vanishing five-form flux and AdS_2 solutions of D=11 supergravity with electric…
Bagger-Lambert theory on an orbifold and its relation to Chern-Simons-matter theories
Nakwoo Kim
We consider how to take an orbifold reduction for the multiple M2-brane theory recently proposed by Bagger and Lambert, and discuss its relation to Chern-Simons theories. Starting…
Classification of the BPS states in Bagger-Lambert Theory
Imtak Jeon, Jongwook Kim, Nakwoo Kim +2
We classify, in a group theoretical manner, the BPS configurations in the multiple M2-brane theory recently proposed by Bagger and Lambert. We present three types of BPS equations…
The Entropy Function for the extremal Kerr-(anti-)de Sitter Black Holes
Jin-Ho Cho, Yumi Ko, Soonkeon Nam
Based on the entropy function formalism, we consider the extremal Kerr-(anti-)de Sitter black holes in 4-dimensions. Solving differential equations exactly, which are obtained by e…