Condensate fraction of liquid4He

✍ Scribed by J. Chela-Flores

• Publisher: Springer US
• Year: 1976
• Tongue: English
• Weight: 360 KB
• Volume: 23
• Category: Article
• ISSN: 0022-2291
• DOI: 10.1007/bf00116310

✦ Synopsis

We calculate the fraction Cv of atoms in the ground state of liquid 4He for a fluid density of 0.023 atom/,~ 3 at various values of temperature and find a good fit with the law Cv(T) = CF(0)[1 --(T/T~)3], where T ~ is the transition temperature ; this law gives CF = 2.3 % at T -1.2 K, which agrees with the result of a recent high-energy neutron diffraction experiment. We Jhrther show that future experiments in the temperature range 1.8 K ~ T ~ T a with a statistical error of 1% or larger will not detect the condensate. A single experiment is suggested to differentiate between our work and an ODLRO type of theory.