There are $1/4$-BPS state solutions of type IIB supergravity which locally exhibit black branes in the shape of three $(p_i,q_i)$-strings jointly intersecting. Globally many of such 3-string junctions may combine to form a more complicated network of black string configurations, hence called a string network (Sen 97).
The lift to 11d supergravity/M-theory of 3-string junctions is supposed to be given by membrane triple junctions.
brane intersections/bound states/wrapped branes
D-branes and anti D-branes form bound states by tachyon condensation, thought to imply the classification of D-brane charge by K-theory
intersecting$\,$M-branes:
The concept goes back to
Ashoke Sen, String Network, JHEP 9803:005,1998 (arXiv:hep-th/9711130)
Soo-Jong Rey, Jung-Tay Yee, BPS Dynamics of Triple $(p,q)$ String Junction, Nucl.Phys. B526 (1998) 229-240 (arXiv:hep-th/9711202)
Keshav Dasgupta, Sunil Mukhi, BPS Nature of 3-String Junctions, Phys.Lett. B423 (1998) 261-264 (arXiv:hep-th/9711094)
Via tropical geometry:
See also
The lift to 11d supergravity/M-theory via membrane triple junctions is discussed in
Morten Krogh, Sangmin Lee, String Network from M-theory, Nucl. Phys. B516:241-254, 1998 (arXiv:hep-th/9712050)
P. Ramadevi, Supergravity Solution for Three-String Junction in M-Theory, JHEP 0006 (2000) 005 (arXiv:hep-th/9906247)
Last revised on November 11, 2019 at 13:44:07. See the history of this page for a list of all contributions to it.