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arXiv · 2112.12045

A note on improved stochastic trace estimation for fermionic string fluctuations

Valentina Forini·Bjoern Leder·Nils Wauschkuhn
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Abstract

We report on the use of a stochastic trace estimator algorithm, based on mutually unbiased bases, for evaluating the trace of a matrix differential operator appearing in the context of lattice simulations for the discretized superstring worldsheet. A study of the variance, in a setup which is slightly modified with respect to the original one, confirms advantages with respect to more traditional methods like the Gaussian estimator.

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Valentina Forini, Bjoern Leder, Nils Wauschkuhn. 2022-05-17. A note on improved stochastic trace estimation for fermionic string fluctuations. https://arxiv.org/abs/2112.12045

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