Periods of rigid double octic Calabi–Yau threefolds
Volume 123 / 2019
                    
                    
                        Annales Polonici Mathematici 123 (2019), 243-258                    
                                        
                        MSC: Primary 14J32; Secondary 14G10, 11F23.                    
                                        
                        DOI: 10.4064/ap180608-23-10                    
                                            
                            Published online: 22 March 2019                        
                                    
                                                Abstract
We compute numerical approximations of the period integrals for eleven rigid double octic Calabi–Yau threefolds and compare them with the periods of the corresponding weight four cusp forms, finding commensurabilities as expected. These give information on the correspondences of these varieties with the associated Kuga–Sato modular threefolds.
 
             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                             
                                                         
                                                            