Physics Letters B (Jan 2025)

ER = EPR is an operational theorem

  • Chris Fields,
  • James F. Glazebrook,
  • Antonino Marcianò,
  • Emanuele Zappala

Journal volume & issue
Vol. 860
p. 139150

Abstract

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We show that in the operational setting of a two-agent, local operations, classical communication (LOCC) protocol, Alice and Bob cannot operationally distinguish monogamous entanglement from a topological identification of points in their respective local spacetimes, i.e. that ER = EPR can be recovered as an operational theorem. Our construction immediately implies that in this operational setting, the local topology of spacetime is observer-relative. It also provides a simple demonstration of the non-traversability of ER bridges. As our construction does not depend on an embedding geometry, it generalizes previous geometric approaches to ER = EPR.

Keywords