semiclassical

Adjective

semiclassical (comparative more semiclassical, superlative most semiclassical)

1. That is classical but has broad, popular appeal.
2. Of, pertaining to, or being a theory that describes a physical system by dividing it into two parts, one described by classical physics and the other by either relativistic or quantum mechanical physics.
   • The semiclassical approach to the relativistic theory has been recently worked out by several authors and the #92;hbar² corrections to the earlier established TF relativistic theory have been derived¹⁷⁻¹⁹.1994, X. Viñas, M. Centelles, M. Durand, P. Schuck, “On the Variational Content of the Wigner-Kirkwood hbar Expansion”, in Carlos Fiolhais, Manuel Fiolhais, Celia Sousa, Jose N Urbano, editors...
   • Whereas semiclassical gravity is based on the semiclassical Einstein equation with sources given by the expectation value of the stress-energy tensor of quantum fields, stochastic semiclassical gravity is based on the Einstein—Langevin equation, which has in addition sources due to the noise kernel.2020, Bei-Lok B. Hu, Enric Verdaguer, Semiclassical and Stochastic Gravity, Cambridge University Press, page 337