# GHZ States as Tripartite PR Boxes: Classical Limit and Retrocausality

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## Abstract

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## 1. GHZ and PR-Box Correlations in the Classical Limit

## 2. Retrocausality in PR-Box and GHZ Correlations

## Author Contributions

## Acknowledgments

## Conflicts of Interest

## References

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**Figure 1.**The horizontal dotted line represents an equal-time surface in the unprimed frame, while the tilted dotted lines represent two equal-time surfaces in the primed frame. The arrows, each representing a cause and an effect, form a closed causal loop.

**Figure 2.**The overlap of the future light cones of $\widehat{a}$ and $\widehat{b}$ either (

**a**) lies or (

**b**) does not lie entirely within the future light cone of $\widehat{j}$.

**Figure 3.**Configurations in which Jim can (

**a**) causally and (

**b**) retrocausally put pairs of particles shared by Alice and Bob in product or entangled states, as he chooses. The dashed arrows connect cause with effect.

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**MDPI and ACS Style**

Rohrlich, D.; Hetzroni, G.
GHZ States as Tripartite PR Boxes: Classical Limit and Retrocausality. *Entropy* **2018**, *20*, 478.
https://doi.org/10.3390/e20060478

**AMA Style**

Rohrlich D, Hetzroni G.
GHZ States as Tripartite PR Boxes: Classical Limit and Retrocausality. *Entropy*. 2018; 20(6):478.
https://doi.org/10.3390/e20060478

**Chicago/Turabian Style**

Rohrlich, Daniel, and Guy Hetzroni.
2018. "GHZ States as Tripartite PR Boxes: Classical Limit and Retrocausality" *Entropy* 20, no. 6: 478.
https://doi.org/10.3390/e20060478