44 papers
General Criterion for the existence of Supertube and BIon in Curved Target Space
D. K. Park, S. Tamaryan, H. J. W. Müller-Kirsten
The supertube and BIon spike solutions are examined in a general curved target space. The criteria for the existence of these solutions are explicitly derived. Also the equation wh…
Supersphere
D. K. Park, S. Tamaryan, H. J. W. Müller-Kirsten
The spherical D2-brane solution is obtained without RR external background. The solution is shown to preserve supersymmetries. The configurations obtained depend on the int…
Exact calculation of the skyrmion lifetime in a ferromagnetic Bose condensate
Yunbo Zhang, Wei-Dong Li, Lu Li +1
The tunneling rate of a skyrmion in ferromagnetic spin-1/2 Bose condensates through an off-centered potential barrier is calculated exactly with the periodic instanton method. The…
D2-branes with magnetic flux in the presence of RR fields
D. K. Park, S. Tamaryan, H. J. W. Müller--Kirsten
D2-branes are studied in the context of Born-Infeld theory as a source of the 3-form RR gauge potential. Considering the static case with only a radial magnetic field it is shown t…
Instanton Approach to Josephson Tunneling between Trapped Condensates
Yunbo Zhang, H. J. W. Müller-Kirsten
An instanton method is proposed to investigate the quantum tunneling between two weakly-linked Bose-Einstein condensates confined in double-well potential traps. We point out some…
Randall-Sundrum Scenario at Nonzero Temperature
D. K. Park, Hungsoo Kim, Yan-Gang Miao +1
The effect of temperature is investigated in the Randall-Sundrum brane-world scenario. It is shown that for a spacetime ansatz motivated by similarity with AdS/CFT correspondence s…