Summary: Geometric quantization is a natural way to construct quantum models starting from classical data. In this work, we start from a symplectic vector space with an inner product and – using techniques of geometric quantization – construct the quantum algebra and equip it with a distinguished state. We compare our result with the construction due to Sorkin – which starts from the same input data – and show that our distinguished state coincides with the Sorkin-Johnson state. Sorkin’s construction was originally applied to the free scalar field over a causal set (locally finite, partially ordered set). Our perspective suggests a natural generalization to less linear examples, such as an interacting field.
{© 2024 The Author(s). Published by IOP Publishing Ltd}