Most papers criticize the idea and describe physical limits. I don't remember which one on the physical possibility of hypercomputation I read (a long time ago)

Most papers criticize the idea and describe physical limits. I don't remember which one on the physical possibility of hypercomputation I read (a long time ago), but there are some papers such as the following: https://oronshagrir.huji.ac.il/sites/default/files/oronshagrir/files/physical_hypercomputation_and_the_church-turing_thesis.pdf https://oronshagrir.huji.ac.il/sites/default/files/oronshagr... https://link.springer.com/article/10.1007/s11047-009-9114-3 https://link.springer.com/article/10.1007/s11047-009-9114-3 https://sci-hub.do/10.1142/S0129626412400105 https://sci-hub.do/10.1142/S0129626412400105 An overview is in A. Syropoulos: Hypercomputation: Computing Beyond the Church-Turing Barrier. Springer 2008, chapters 8-9. Gotta love the subsection headline in the third paper mentioned above: "A CTC Based Relativistic Hypercomputer That Actually Works Without Problems." ;-)