Hybrid cosmological attractors

We construct $\alpha$-attractor versions of hybrid inflation models. In these models, the potential inflaton field $\varphi$ is uplifted by second $\chi$. This uplifting ends due to a tachyonic instability with respect $\chi$, which appears when becomes smaller than some critical value $\varphi_{c}$. large $N$ limit, models have standard universal predictions. particular, $n_{s }= 1- {2 \over N}$ for exponential attractors. However, in special cases limit reached only beyond horizon, $N \gtrsim 60$. may change predictions cosmological observations. For any fixed $N$, uplift $V_{\rm up}$, or $\varphi_{c}$, we find another attractor prediction, $ n_s = 1$. By changing parameters up}$ and $\varphi_{c}$ one can continuously interpolate between two $n_{s} provides significant flexibility, be very welcome view rapidly growing amount precision data. Our main result not specific Rather, it generic inflationary where potential, reasons, uplifted, prematurely.