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Accepted · first revision · record

Title: A Lorentz-covariant collapse model for interacting quantum fields
Plain: Collapse models are written for slow particles. Versions consistent with special relativity exist for a fixed number of distinguishable particles, but not for quantum fields, where particles are created and destroyed and continuous-collapse versions produce unlimited energy.
Precise: Construct a stochastic collapse dynamics for an interacting relativistic quantum field theory (e.g. $\phi^4$ or QED) that is Lorentz covariant, reduces to GRW or CSL in the nonrelativistic limit, and has a finite energy-production rate per unit volume. Tumulka's rGRWf covers non-interacting (2006) and interacting (arXiv:2002.00482, 2020) distinguishable particles with fixed $N$; relativistic CSL-type proposals need extra structure (mediating fields or smeared couplings) to avoid divergent energy production.
Settled by: An explicit model with proofs of covariance, finite energy production and the correct nonrelativistic limit.
Kind: well-posed
Answer type: proof
References: (empty)
Literature status: partially-resolved
Status note: Covariant flash collapse exists for N interacting distinguishable particles (2020); no accepted version covers variable particle number or interacting fields.
Posed since: (empty)