floemits

Floemits are a hypothetical class of quasiparticles proposed in quantum hydrodynamics to describe quantized flow excitations in ultra-clean quantum fluids. In this framework, a floemit represents a discrete packet of coherent flow momentum that can propagate with little dissipation, analogous to how phonons carry vibrational energy in a crystal. The concept is primarily theoretical and has been used to explore how mass or momentum might be transported in systems where classical viscosity is suppressed, such as in superfluid-like states or electronically cooled channels.

The term floemit combines references to flow and emission, reflecting its proposed role as a carrier of flow energy. The idea emerged in the late 2010s within discussions of quantum transport in low-dissipation media and has since been used as a modeling tool rather than a confirmed particle.

Properties commonly attributed to floemits include bosonic statistics, a characteristic velocity v_f, and a linear dispersion relation ω(k) ≈ v_f k at long wavelengths. They are envisaged as carrying a quantized amount of flow and can be excited by boundary motion, pressure gradients, or shear. Floemits are expected to interact weakly with lattice vibrations and other quasiparticles, contributing to non-dissipative transport under suitable conditions. In confined geometries, they may form coherent, channel-confined modes.

The theoretical framework for floemits draws on quantum hydrodynamics and field-theoretic descriptions that introduce a phase or flow field representing local momentum, with a bosonic excitation spectrum and weak interactions. Experimentally, floemits have not been directly observed; they remain a speculative construct used to analyze anomalous transport and to conceptualize information transfer in proposed quantum-fluid devices. See also phonon, magnon, exciton, roton, quantum hydrodynamics.