Begleitzuständen
Begleitzustände (accompanying states) is a term used in German-language physics and chemistry to describe secondary quantum states that occur together with a primary state during a process. They arise from couplings to other degrees of freedom or to additional particles and can influence observable properties without being the main state of interest.
In spectroscopy and molecular physics, Begleitzustände often appear as vibronic or vibro-rotationally coupled states that accompany
In solid-state and condensed-matter systems, Begleitzustände may involve excitations that accompany a primary quasiparticle, such as
Terminology and usage vary by field and author. Begleitzustände are often discussed alongside related ideas such