Fubini-Study metrics and Levi-Civita connections on quantum projective spaces

TL;DR

This paper develops quantum analogues of Fubini-Study metrics and Levi-Civita connections on quantum projective spaces, establishing their properties and compatibility conditions.

Contribution

It introduces quantum metrics and Levi-Civita connections on quantum projective spaces, demonstrating their torsion-free, cotorsion-free, and bimodule properties.

Findings

Quantum metrics are defined as symmetric two-tensors.

Connections are shown to be torsion-free and cotorsion-free.

The quantum Levi-Civita connections are bimodule and metric-compatible.

Abstract

We introduce analogues of the Fubini-Study metrics and the corresponding Levi-Civita connections on quantum projective spaces. We define the quantum metrics as two-tensors, symmetric in the appropriate sense, in terms of the differential calculi introduced by Heckenberger and Kolb. We define connections on these calculi and show that they are torsion free and cotorsion free, where the latter condition uses the quantum metric and is a weaker notion of metric compatibility. Finally we show that these connections are bimodule connections and that the metric compatibility also holds in a stronger sense.