Quantum collapse models represent a class of theoretical modifications to standard quantum mechanics that seek to resolve the long‐standing measurement problem. They posit that the linear evolution of ...

Quantum mechanics suggests that particles can be in a state of superposition - in two states at the same time - until a measurement take place. Only then does the wavefunction describing the particle ...

Einstein agreed. Physicists have proposed many solutions to this puzzle, including that there is never a collapse and, instead, a new Universe is spawned every time a particle is in two places at once ...