Experiments about TLSs' interactions

Created about 5 years ago, updated 4 months ago

ID27882

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## 1973 [Nonlinear Phonon Propagation in Fused Silica below 1 K](https://knowen-production.s3.amazonaws.com/uploads/attachment/file/5580/graebner-halperin.pdf)
Brage Golding, J. E. Graebner, B. I. Halperin, and R. J. Schutz 

## differences between dielectric and acoustic properties - electric versus elastic dipoles


- Hunklinger [1977 + nonlinearity](https://knowen-production.s3.amazonaws.com/uploads/attachment/file/5416/hunklinger%2B1977.pdf)


- paradox ## 1987 [Spectral diffusion, phonon echoes, and saturation recovery in glasses at low temperatures](https://knowen-production.s3.amazonaws.com/uploads/attachment/file/5535/black-halperin.pdf) J. L. Black and B.I. Halperin

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