Sublime

Somehow the photons always get it right, even if the choice to turn the path-tracking detectors on or off is delayed until after a given photon has passed through the partition.

Yet, there is a problem: The no-boundary proposal predicts the most minimal inflationary burst possible.

Theoretical physicist

Einstein’s equation:

physics—gravity, Planck’s constant, and the speed of light. The results and are the units sometimes called quantum length and quantum time—the smallest regions of space and time which can be described meaningfully. The so-called Planck length is about 10−35 meter and the Planck time is about 10−43 second.

For example, the law of conservation of energy, a fundamental principle of physics first described by Julius Robert von Mayer in 1842, tells us that energy in an isolated system, such as earth’s biosphere, can be neither created nor destroyed. It can only be changed from one form to another.

the idea that in quantum field theories, scaling things up or down is like moving about in an additional dimension has a long history.

What matters is not what is most probable in the theory but what is most probable to be observed.