38 research outputs found
General Criterion for the existence of Supertube and BIon in Curved Target Space
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 which the general BIon solution should satisfy is
derived.Comment: 12 pages, no figur
Supersphere
The spherical D2-brane solution is obtained without RR external background.
The solution is shown to preserve supersymmetries. The configurations
obtained depend on the integration constant . For the shape
of the solution is a deformed sphere. When, however, , the D2-brane
system seems to exhibit a brane-anti-brane configuration.Comment: 11 pages, 2 figure
Gross-Ooguri Phase Transition at Zero and Finite Temperature: Two Circular Wilson Loop Case
In the context of correspondence the two Wilson loop correlator is
examined at both zero and finite temperatures. On the basis of an entirely
analytical approach we have found for Nambu-Goto strings the functional
relation between Euclidean action and loop
separation with integration constant , which corresponds to the
analogous formula for point-particles. The physical implications of this
relation are explored in particular for the Gross-Ooguri phase transition at
finite temperature.Comment: 13pages, 6 postscript figures, published version in JHE
Logarithmic Correction to Newton Potential in Randall-Sundrum Scenario
Using a fixed-energy amplitude in Randall-Sundrum single brane scenario, we
compute the Newton potential on the brane. It is shown that the correction
terms to the Newton potential involve a logarithmic factor. Especially, when
the distance between two point masses are very small compared to radius,
the contribution of KK spectrum becomes dominant compared to the usual
inversely square law. This fact may be used to prove the existence of an extra
dimension experimentally.Comment: 7 pages, 1 figur
Tunneling of Born-Infeld Strings to D2-Branes
A Born-Infeld theory describing a D2-brane coupled to a 4-form RR field
strength is considered, and the general solutions of the static and Euclidean
time equations are derived and discussed. The period of the bounce solutions is
shown to allow a consideration of tunneling and quantum-classical transitions
in the sphaleron region. The order of such transitions, depending on the
strength of the RR field strength, is determined. A criterion is then derived
to confirm these findings.Comment: 20 pages, 7 postscript figures, will appear in NP