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arXiv · 1904.01559

The quantum geometric tensor from generating functions

J. Alvarez-Jiménez·J. David Vergara
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Abstract

We introduce a new method to compute the Quantum Geometric Tensor, this procedure allows us to compute the Quantum Information Metric and the Berry curvature perturbatively for a theory with an arbitrary interaction Hamiltonian. The calculation uses the generating function method, and it is illustrated with the harmonic oscillator with a linear and a quartic perturbation.

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J. Alvarez-Jiménez, J. David Vergara. 2019-04-02. The quantum geometric tensor from generating functions. https://doi.org/10.1142/s0219749919500175

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