It is of great interest to explore matter in nontrivial quantum arrangements, including Schrodinger cat-like states. Such states are sensitive decoherence from their environment. Recently, Ref. [1] we computed the rate a piece superposed that primarily only interacts gravitationally, dark-matter-Schrodinger-cat-state (DMSCS), within nonrelativistic approximation. In this work improve general re...

I n our previous article about special-relativistic visualization,1 we described what the travelers from our highly developed civilization observed when they passed the Earth; now, they set out for the Cygnus X-1 binary system, which is roughly 6,000 light years away. The Cygnus X-1 system consists of a super giant variable star (HDE 226868) and a very compact object—presumably a black hole—wit...