Stringy-running-vacuum-model inflation: from primordial gravitational waves and stiff axion matter to dynamical dark energyNick E. Mavromatos and Joan Solà PeracaulaEur. Phys. J. Spec. Top., 230 9 (2021) 2077-2110DOI: https://doi.org/10.1140/epjs/s11734-021-00197-8