Atomic Theory of the $λ$ Transition in Helium TeX Export

@article{citeulike:6084213, abstract = {It is shown from first principles that; in spite of the large interatomic forces; liquid He 4 should exhibit a transition analogous to the transition in an ideal Bose-Einstein gas. The exact partition function is written as an integral over trajectories; using the space-time approach to quantum mechanics. It is next argued that the motion of one atom through the others is not opposed by a potential barrier because the others may move out of the way. This just increases the effective inertia of the moving atom. This permits a simpler form to be written for the partition function. A rough analysis of this form shows the existence of a transition; but of the third order. It is possible that a more complete analysis would show that the transition implied by the simplified partition function is actually like the experimental one.}, author = {Feynman, R. P.}, citeulike-article-id = {6084213}, citeulike-linkout-0 = {http://dx.doi.org/10.1103/PhysRev.91.1291}, citeulike-linkout-1 = {http://link.aps.org/abstract/PR/v91/i6/p1291_1}, citeulike-linkout-2 = {http://link.aps.org/pdf/PR/v91/i6/p1291_1}, doi = {10.1103/PhysRev.91.1291}, journal = {Physical Review Online Archive (Prola)}, keywords = {bose-einstein-condensation, helium-4, superfluids}, month = {Sep}, number = {6}, pages = {1291--1301}, posted-at = {2009-11-08 14:03:35}, priority = {2}, publisher = {American Physical Society}, title = {Atomic Theory of the \$\lambda{}\$ Transition in Helium}, url = {http://dx.doi.org/10.1103/PhysRev.91.1291}, volume = {91}, year = {1953} }

TY - JOUR ID - citeulike:6084213 L3 - citeulike-article-id:6084213 N2 - It is shown from first principles that; in spite of the large interatomic forces; liquid He 4 should exhibit a transition analogous to the transition in an ideal Bose-Einstein gas. The exact partition function is written as an integral over trajectories; using the space-time approach to quantum mechanics. It is next argued that the motion of one atom through the others is not opposed by a potential barrier because the others may move out of the way. This just increases the effective inertia of the moving atom. This permits a simpler form to be written for the partition function. A rough analysis of this form shows the existence of a transition; but of the third order. It is possible that a more complete analysis would show that the transition implied by the simplified partition function is actually like the experimental one. IS - 6 JF - Physical Review Online Archive (Prola) EP - 1301 TI - Atomic Theory of the $\lambda{}$ Transition in Helium PB - American Physical Society VL - 91 SP - 1291 KW - bose-einstein-condensation KW - helium-4 KW - superfluids AU - Feynman, RP PY - 1953/Sep// UR - http://dx.doi.org/10.1103/PhysRev.91.1291 ER -