OffDiagonal LongRange Order (odlro) and Ground State Properties of Liquid Helium.
Abstract
An independent calculation of the condensate fraction and the ground state energy of liquid helium is given. We use the Frohlich ansatz for the second reduced density matrix in conjunction with the ODLRO hypothesis for liquid helium below the critical temperature. Frohlich's ansatz is shown to be consistent with numerical calculations of the ground state properties of liquid helium. The ground state energy was 5.10(DEGREES)K, close to the experimental value. The condensate fraction turned out to be about 10% which is within the margin of error of recent neutron scattering experiments and agrees with other theoretical calculations.
 Publication:

Ph.D. Thesis
 Pub Date:
 1983
 Bibcode:
 1983PhDT........71R
 Keywords:

 Physics: Fluid and Plasma