Aspects of plane wave (matrix) string dynamics
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- Blau, M., O’Loughlin, M. & Seri, L. J. High Energ. Phys. (2012) 2012: 98. doi:10.1007/JHEP04(2012)098
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We analyse two issues that arise in the context of (matrix) string theories in plane wave backgrounds, namely (1) the use of Brinkmann- versus Rosen-variables in the quantum theory for general plane waves (which we settle conclusively in favour of Brinkmann variables), and (2) the regularisation of the quantum dynamics for a certain class of singular plane waves (discussing the benefits and limitations of regularisations of the plane-wave metric itself).