Supersymmetric Branes in the Matrix Model of PP Wave Background

We consider the matrix model associated with pp-wave background and construct supersymmetric branes. In addition to the spherical membrane preserving 16 supersymmetries, one may construct rotating elliptic membranes preserving 8 supersymmetries. The other

UOSTP-02101

hep-th/0204033

SupersymmetricBranesintheMatrixModelofPPWaveBackground

arXiv:hep-th/0204033v4 14 Aug 2002DongsuBakPhysicsDepartment,UniversityofSeoul,Seoul130-743,Korea(dsbak@mach.uos.ac.kr)Weconsiderthematrixmodelassociatedwithpp-wavebackgroundandconstructsupersym-metricbranes.Inadditiontothesphericalmembranepreserving16supersymmetries,onemayconstructrotatingellipticmembranespreserving8supersymmetries.Theotherbranchdescribesrotating1/8BPShyperbolicbranesingeneral.Whentheangularmomentumvanishes,thehy-perbolicbranebecomes1/4BPSpreserving8realsupersymmetries.Itmayhavetheshapeofhyperboloidofoneortwosheetsembeddedinthe atthreespace.Westudythespectrumoftheworldvolume eldsonthehyperbolicbranesandshowthattherearenomasslessdegrees.Wealsocomputethespectrumofthe0-2strings.

February1,2008

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