Acknowledgments

This work is partly supported by JSPS KAKENHI (Grants No. 25287065), NCN (Contract No. 2012/07/B/ST2/03907), by the THEXO JRA within the EU-FP7-IA project ENSAR (No. 262010), by the ERANET-NuPNET grant SARFEN of the Polish National Centre for Research and Development, and by the Academy of Finland and University of Jyväskylä within the FIDIPRO programme. The numerical calculations were carried out on a SR16000 computer at the Yukawa Institute for Theoretical Physics in Kyoto University and at the RIKEN Integrated Cluster of Clusters (RICC) facility.