Dissipative wave packet dynamics of the intramolecular hydrogen bond in o-phthalic acid monomethylester
Abstract
We investigate the infrared laser-driven ultrafast dynamics of the carboxy-deuterated title compound in the condensed phase using a system–bath approach. The three-dimensional relevant system comprises the OD stretching and bending motion as well as a low-frequency out-of-plane twisting vibration modulating the hydrogen-bond strength. The dominant relaxation and dephasing channels are identified giving rise to three terms which contribute to the system–bath interaction: (i) A linear system-