# Worldline theories with towers of internal states

@article{Abel2020WorldlineTW, title={Worldline theories with towers of internal states}, author={S. Abel and D. Lewis}, journal={arXiv: High Energy Physics - Theory}, year={2020} }

We study particle theories that have a tower of worldline internal degrees of freedom. Such a theory can arise when the worldsheet of closed strings is dimensionally reduced to a worldline, in which case the tower is infinite with regularly spaced masses. But our discussion is significantly more general than this, and there is scope to consider all kinds of internal degrees of freedom carried by the propagating particle. For example it is possible to consider towers corresponding to other… CONTINUE READING

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