TY - JOUR
T1 - Comments on unstable branes
AU - Intriligator, Ken
AU - Kumar, Jason
AU - Kleban, Matt
PY - 2001
Y1 - 2001
N2 - We argue that type-II string theories contain unstable NS4-branes, which descend from a conjectured unstable M4-brane of M-theory. Assuming that an M2 brane can arise in M5-brane/anti-brane annihilation, the unstable M4 brane, and also an unstable M3-brane, must exist as sphalerons. We compare the tensions of the unstable NS4-branes, M4-brane, and related type-II unstable D-branes, and present lid supergravity solutions for unstable Mp-branes for all p. We study the ℤ2 gauge symmetry on the worldvolume of unstable branes, and argue that it can never be unbroken in the presence of lower brane charge.
AB - We argue that type-II string theories contain unstable NS4-branes, which descend from a conjectured unstable M4-brane of M-theory. Assuming that an M2 brane can arise in M5-brane/anti-brane annihilation, the unstable M4 brane, and also an unstable M3-brane, must exist as sphalerons. We compare the tensions of the unstable NS4-branes, M4-brane, and related type-II unstable D-branes, and present lid supergravity solutions for unstable Mp-branes for all p. We study the ℤ2 gauge symmetry on the worldvolume of unstable branes, and argue that it can never be unbroken in the presence of lower brane charge.
KW - D-branes
KW - M-Theory
UR - http://www.scopus.com/inward/record.url?scp=33744859583&partnerID=8YFLogxK
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U2 - 10.1088/1126-6708/2001/02/023
DO - 10.1088/1126-6708/2001/02/023
M3 - Article
AN - SCOPUS:33744859583
SN - 1029-8479
VL - 5
SP - XXXIII-14
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 2
ER -