TY - JOUR
T1 - A microscopic study of the ground-state properties and excitation spectrum of an interacting Bose system using the combined method relating correlated-basis-functions and the canonical transformations
AU - Wong, K. W.
AU - Chow, Wan Ki
AU - Fung, P. C W
PY - 1986/1/1
Y1 - 1986/1/1
N2 - Previously, Wong and Fung proposed a microscopic theory which combines the methods of the Correlated-Basis-Functions and the canonical transformation approach in studying a many-boson system. Using a model potential function which satisfies certain criteria, a one-to-one mapping between real- and quasi-particle spaces exists. We have expressed the explicit forms of the relevant transformation matrix elements in terms of the two-particle correlation function. Using our special model for the two-particle potential function, we calculate the ground-state properties and the low-lying excitation spectrum of a Bose system with liquid helium density and report that numerical results agree reasonably well with experimental data.
AB - Previously, Wong and Fung proposed a microscopic theory which combines the methods of the Correlated-Basis-Functions and the canonical transformation approach in studying a many-boson system. Using a model potential function which satisfies certain criteria, a one-to-one mapping between real- and quasi-particle spaces exists. We have expressed the explicit forms of the relevant transformation matrix elements in terms of the two-particle correlation function. Using our special model for the two-particle potential function, we calculate the ground-state properties and the low-lying excitation spectrum of a Bose system with liquid helium density and report that numerical results agree reasonably well with experimental data.
UR - http://www.scopus.com/inward/record.url?scp=46149129362&partnerID=8YFLogxK
U2 - 10.1016/0378-4371(86)90027-0
DO - 10.1016/0378-4371(86)90027-0
M3 - Journal article
VL - 138
SP - 456
EP - 489
JO - Physica A: Statistical Mechanics and its Applications
JF - Physica A: Statistical Mechanics and its Applications
SN - 0378-4371
IS - 3
ER -