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BPS‐spectra in four dimensions from M ‐theory
Author(s) -
Henningson Måns
Publication year - 1999
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/(sici)1521-3978(199901)47:1/3<189::aid-prop189>3.0.co;2-x
Subject(s) - multiplet , central charge , brane , physics , spectrum (functional analysis) , supersymmetry , charge (physics) , theoretical physics , spectral line , mathematical physics , quantum mechanics , mathematics , geometry , conformal map
I review my work together with Piljin Yi [1] on the spectrum of BPS‐saturated states in N = 2 supersymmetric Yang‐Mills theories. In an M ‐theory description, such states are realized as certain two‐brane configurations. We first show how the central charge of the N = 2 algebra arises from the two‐form central charge of the eleven‐dimensional supersymmetry algebra, and derive the condition for a two‐brane configuration to be BPS‐saturated. We then discuss how the topology of the two‐brane determines the type of BPS‐multiplet. Finally, we discuss the phenomenon of marginal stability and show how it is related to the mutual non‐locality of states.