Theory of elementary excitation spectrum in liquid $sup 4$He (in Russian)
Journal Article
·
· Zh. Eksp. Teor. Fiz., v. 65, no. 1, pp. 271-282
OSTI ID:4344031
A theory of bound excitation states in a Bose system with a condensate is developed. The theory explains, in particluar, the spectrum branch below the excitation two-roton decay threshold observed in /sup 4/He hight scattering experiments but not observed in neutron experiments. The existence of a singular continuation of the one-particle branch beyond the two-roton decay threshold is established, the main results of Cowley and Woods' experiments can be interpreted if this circumstance is taken into account. (auth)
- Research Organization:
- Perm State Univ., USSR
- NSA Number:
- NSA-29-022732
- OSTI ID:
- 4344031
- Journal Information:
- Zh. Eksp. Teor. Fiz., v. 65, no. 1, pp. 271-282, Journal Name: Zh. Eksp. Teor. Fiz., v. 65, no. 1, pp. 271-282; ISSN ZETFA
- Country of Publication:
- Country unknown/Code not available
- Language:
- Russian
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