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arXiv · 2312.06618

Scalar Product for a Version of Minisuperspace Model with Grassmann Variables

Sergey L. Cherkas·Vladimir L. Kalashnikov
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Abstract

Grassmann variables are used to formally transform a system with constraints into an unconstrained system. As a result, the Schr\"{o}dinger equation arises instead of the Wheeler-DeWitt one. The Schr\"{o}dinger equation describes a system's evolution, but a definition of the scalar product is needed to calculate the mean values of the operators. We suggest an explicit formula for the scalar product related to the Klein-Gordon scalar product. The calculation of the mean values is compared with an etalon method in which a redundant degree of freedom is excluded. Nevertheless, we note that a complete correspondence with the etalon picture is not found. Apparently, the picture with Grassmann variables requires a further understanding of the underlying Hilbert space.

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Sergey L. Cherkas, Vladimir L. Kalashnikov. 2023-12-08. Scalar Product for a Version of Minisuperspace Model with Grassmann Variables. https://doi.org/10.3390/universe9120508

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