Boris Kriger (b. 1970) is a Canadian researcher and Lead Investigator at the Institute of Integrative and Interdisciplinary Research (Toronto, Canada), affiliated with the Information Physics Institute (Gosport, UK). He is the author of over eighty research publications (1999–2026).
Kriger’s principal result is the derivation of the cosmological constant Λ from measured quantities in nuclear physics, with no free parameters. The standard calculation, originating with Zel’dovich (1968), yields a discrepancy of 55 to 120 orders of magnitude between the quantum field theory prediction and the observed value of Λ. Kriger showed that this discrepancy traces to an unexamined assumption: the identification of quantum vacuum energy with the cosmological constant — postulated by Zel’dovich in 1967 but never derived from the Einstein field equations. When this identification is abandoned, as the trace-free (unimodular) formulation of general relativity formally permits, vacuum energy becomes a local gravitating quantity, and Λ emerges as an independent geometric integration constant. The vacuum–matter coupling α then follows from the experimentally measured QCD sigma terms of the nucleon. After accounting for the cosmological baryon fraction and nonlinear self-screening discovered through N-body simulations, this yields α_eff ≈ 0.005, consistent with the cosmologically observed value.
A second, independent derivation obtains the same Λ from the Hopf fibration on RP³, treating cosmic expansion as centrifugal relaxation — a geometric route that uses no particle physics input and converges on the same result.
The programme has been examined in documented correspondence by researchers at Stanford/SLAC, Stony Brook (C.N. Yang Institute), University of Cape Town, University of Maryland, University of Minnesota, University of Barcelona, LMU Munich, and Max Planck Institute for Astrophysics. The full record is published at https://interdisciplinary-research.institute/reception/
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