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讨论了在声子作用下,两能级隧道态耦合态激发和退激发规律,并用此理论解释低温低频声吸收规律The occurrence of transitions between two tunneling states of two-level systems(TLS) in glasses is attributed to the coupling to a phonon field. The coupling makes TLS form new “polar coupling states”, we call them as TLS-phonon coupling states. The behaviour of the excitation and de-excitation of TLS coupling states via the interaction with phonon is presented to explain the experimental characteristics of the low-frequency sound absorption in glasses at low temperatures.
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