Related papers: Nonrelativistic spatiotemporal quantum reference frames

Nonrelativistic spatiotemporal quantum reference frames

URL: http://arxiv.org/abs/2307.01874v3
Date: Mon, 11 Mar 2024 11:25:25 GMT
Title: Nonrelativistic spatiotemporal quantum reference frames
Authors: Michael Suleymanov, Ismael L. Paiva, Eliahu Cohen
Abstract summary: We introduce and analyze a nonrelativistic framework in which each system contains an internal clock in addition to its external clock. We show that even in simple scenarios, the relative uncertainty between clocks affects the relative spatial spread of the systems.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Quantum reference frames have attracted renewed interest recently, as their exploration is relevant and instructive in many areas of quantum theory. Among the different types, position and time reference frames have captivated special attention. Here, we introduce and analyze a nonrelativistic framework in which each system contains an internal clock, in addition to its external (spatial) degree of freedom and, hence, can be used as a spatiotemporal quantum reference frame. We present expressions for expectation values and variances of relevant observables in different perspectives, as well as relations between these quantities in different perspectives in scenarios with no interactions. In particular, we show that even in these simple scenarios, the relative uncertainty between clocks affects the relative spatial spread of the systems.

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