# nLab Massimo Porrati

Selected writings

## Selected writings

On the Schwinger effect seen in open string theory:

On adjustments of the action functional for spin massive $3/2$-particles (Rarita-Schwinger field) by non-minimal coupling that evades the Velo-Zwanziger problem:

• Massimo Porrati, Rakibur Rahman, Causal Propagation of a Charged Spin 3/2 Field in an External Electromagnetic Background, Phys. Rev. D80:025009, 2009 (arXiv:0906.1432)

Discussion of the Velo-Zwanziger problem for the higher string excitations that appear in string theory:

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Created on March 26, 2020 at 11:42:56. See the history of this page for a list of all contributions to it.