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arXiv · 1809.08279

Computational Complexity of Vacua and Near-Vacua in Field and String Theory

James Halverson·Fabian Ruehle
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Abstract

We demonstrate that the problems of finding stable or metastable vacua in a low energy effective field theory requires solving nested NP-hard and co-NP-hard problems, while the problem of finding near-vacua is in P. Multiple problems relevant for computing effective potential contributions from string theory are shown to be instances of NP-hard problems. If P $\neq$ NP, the hardness of finding string vacua is exponential in the number of scalar fields. Cosmological implications, including for rolling solutions, are discussed in light of a recently proposed measure.

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James Halverson, Fabian Ruehle. 2018-09-21. Computational Complexity of Vacua and Near-Vacua in Field and String Theory. https://doi.org/10.1103/physrevd.99.046015

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