TY - JOUR
T1 - Born-oppenheimer revisited
AU - Aharonov, Y.
AU - Ben-Reuven, E.
AU - Popescu, S.
AU - Rohrlich, D.
PY - 1991/2/25
Y1 - 1991/2/25
N2 - An algebraic approach to solving degenerate perturbation theory is exhibited. This approach is used to solve the canonical Berry phase problem in the Born-Oppenheimer approximation, as well as the analogous classical problem. The show variables need not commute. Non-abelian phases and field theory anomalies are treated as examples. A non-adiabatic extension is suggested.
AB - An algebraic approach to solving degenerate perturbation theory is exhibited. This approach is used to solve the canonical Berry phase problem in the Born-Oppenheimer approximation, as well as the analogous classical problem. The show variables need not commute. Non-abelian phases and field theory anomalies are treated as examples. A non-adiabatic extension is suggested.
UR - http://www.scopus.com/inward/record.url?scp=0000855625&partnerID=8YFLogxK
U2 - 10.1016/0550-3213(91)90164-S
DO - 10.1016/0550-3213(91)90164-S
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AN - SCOPUS:0000855625
SN - 0550-3213
VL - 350
SP - 818
EP - 830
JO - Nuclear Physics, Section B
JF - Nuclear Physics, Section B
IS - 3
ER -