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Here we present CAFein, a new computational tool for investigating radiativedissipation of dynamic tides in close binaries and of non-adiabatic, non-radialstellar oscillations in isolated stars in the linear regime. For the latter,CAFein computes the non-adiabatic eigenfrequencies and eigenfunctions ofdetailed stellar models. The code is based on the so-called Riccati method, anumerical algorithm that has been successfully applied to a variety of stellarpulsators, and which doesn't suffer of the major drawbacks of commonly usedshooting and relaxation schemes. Here we present an extension of the Riccatimethod to investigate dynamic tides in close binaries. We demonstrate CAFein'scapabilities as a stellar pulsation code both in the adiabatic andnon-adiabatic regime, by reproducing previously published eigenfrequencies of apolytrope, and by successfully identifying the unstable modes of a stellarmodel in the $\beta$ Cephei/SPB region of the Hertzsprung-Russell diagram.Finally, we verify CAFein's behavior in the dynamic tides regime byinvestigating the effects of dynamic tides on the eigenfunctions and orbitaland spin evolution of massive Main Sequence stars in eccentric binaries, and ofhot Jupiter host stars. The plethora of asteroseismic data provided by theNASA's Kepler satellite, some of which include the direct detection of tidallyexcited stellar oscillations, make CAFein quite timely. Furthermore, theincreasing number of observed short-period detached double white dwarfs (WD)and the observed orbital decay in the tightest of such binaries open up a newpossibility of investigating WD interiors through the effects of tides on theirorbital evolution

Introducing CAFein, a New Computational Tool for Stellar Pulsations and Dynamic Tides