Hi everyone, This is a reminder that Prof. Frank Grossman will be giving Theochem seminar tomorrow at 4:15 in MIT 4-237. The title and abstract of his talk are below. Stay warm and dry today! Jennifer *Semiclassical initial value representations: Basics and applications to quantum dissipation* The semiclassical initial value formalism to solve the time-dependent Schroedinger equation will be reviewed. Special focus will be laid on the Herman Kluk method [1] and Heller's thawed Gaussians [2]. A combination of the two methods for multi degree of freedom systems, the semiclassical hybrid dynamics [3], will then be introduced. After a brief digression to the semiclassical description of the scattering of two identical particles [4], we present results for the quantum-classical transition of a nonlinear oscillator coupled to an Ohmic heat bath [5] as well as for the thermalization of the expectation values of such an oscillator [6]. We contrast two different approaches to open system dynamics: the explicit treatment of the bath degrees of freedom and the reduced density matrix method, respectively. [1] M. Herman and E. Kluk, Chem. Phys.* 91*, 27 (1984) [2] E. J. Heller, J. Chem. Phys. *62*, 1544 (1975) [3] F. Grossmann, J. Chem. Phys. *125*, 014111 (2006) [4] F. Grossmann, M. Buchholz, E. Pollak and M. Nest, Phys. Rev. A *89*, 032104 (2014) [5] C.-M. Goletz and F. Grossmann, J. Chem. Phys. *130*, 244107 (2009) [6] W. Koch, F. Grossmann, J. T. Stockburger and J. Ankerhold, Phys. Rev. Lett.*100*, 230402 (2008)