We already live in the post-einsteinian physics era, that is post-relativistic, with applications such as the Quantum communications satellite MICIUS launched by China in August 2016.
It is based on applied quantum entanglement to encrypt communications.
Scientists found that when two entangled particles are separated, one particle can somehow affect the action of the far-off twin instantly, which is what Albert Einstein described as a "spooky action at a distance."
This simply means there might be a still to discover unknown particle responsible for the entanglement, like the
mesotron aka
pi meson as the carrier of the nuclear force that holds atomic nuclei together, or the electron in the electromagnetic force. And with a supraluminal speed!
For more clarity, I called it the
Mallima Particle (만리마자, 萬里马子: 10 thousands li horse, a mythical Korean winged horse able to gallop ten thousand li -approximately 4'000 km- in a single day).
According to
Prof. Juan Yin and colleagues at the University of Science and Technology of China in Shanghai, that has determined a lower bound on how fast it must be, the answer is that it is at least
four orders of magnitude faster than light.
▲ The hypothetical Mallima Particle, responsible of the entanglement interaction.