title: Open M5-branes.
abstract: We show how, in heterotic M theory, an M5-brane in the 11-dimensional bulk may end on an "M9-brane" boundary, the M5-brane boundary being a Yang-monopole 4-brane. This possibility suggests various novel 5-brane configurations of heterotic M theory, in particular, a static M5-brane suspended between the two M9-brane boundaries, for which we find the asymptotic heterotic supergravity solution.
authors.affiliation: Centre for Theoretical Physics, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
authors.forename: Eric A
authors.initials: EA
authors.lastname: Bergshoeff
authors.forename: Gary W
authors.initials: GW
authors.lastname: Gibbons
authors.forename: Paul K
authors.initials: PK
authors.lastname: Townsend