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[en] We develop a path-integral theory to study the angle-resolved photoemission spectra (ARPES) of high-Tc superconductors based on a two-dimensional model for the CuO2 conduction plane, including both electron-electron (e-e) and electron-phonon (e-ph) interactions. Comparing our result with the experimental one of Bi2Sr2CaCu2O8, we find that the experimentally observed isotopic band shift in ARPES is due to the off-diagonal quadratic e-ph coupling, whereas the presence of e-e repulsion partially suppresses this effect
Journal
Journal of Physics. Conference Series (Online); ISSN 1742-6596; 
; v. 100(5); [4 p.]
; v. 100(5); [4 p.]