Scientifique

Evidence of macroscopically entangled protons in a mixed isotope crystal of KHpD1−pCO3   

We examine whether protons and deuterons in a crystal of KH_0.76D_0.24CO₃ at 300 K are particles or matter waves. The neutron scattering function measured over a broad range of reciprocal space reveals the enhanced diffraction pattern anticipated for antisymmetrized macroscopic states for protons (fermions). These features exclude a statistical distribution of protons and deuterons. Raman spectra are consistent with a mixture of KHCO₃ and KDCO₃ sublattices whose isomorphous structures are independent of the isotope content. We propose a theoretical framework for decoherence-free proton and deuteron states.

A. Menelle, dépêche du 15/02/2010