eLetters is an online forum for ongoing peer review. Submission of eLetters are open to all. eLetters are not edited, proofread, or indexed. Please read our Terms of Service before submitting your own eLetter.

- TIME, SPACE, AND GRAVITATION See all authors and affiliations Science 02 Jan 1920: Vol. 51, Issue 1305, pp. 8-10 DOI: 10.1126/science.51.1305.8
TIME, SPACE, AND WICK ROTATION

Following Einstein's example of turning Planck's mathematical quanta into the physical photoelectric effect, the Wick rotation used to describe imaginary time may be transformed from mathematical "trickery" to physical meaning, and provide a modern way to unite space and time (and imaginary time) into one space-time.

Stephen Hawking writes in "A Brief History of Time" – Bantam Press, 1988, pp.66-67:

Show More

"What the spin of a particle really tells us is what the particle looks like from different directions."

Particles of matter like the proton and electron have spin 1/2, which means these particles must be turned through 2 complete revolutions to look the same – and, not coincidentally, you must go round a Mobius strip twice to reach your starting point. It seems plausible that the particular values of quantum spin could be determined by another set of particular values viz those in electronics' BITS or BInary digiTS, which always take the form of either 1 or 0. First, the 1's and 0's are programmed to form the shape of a Mobius strip, which is merely two-dimensional (2-D). The paper “From Planck Data to Planck Era: Observational Tests of Holographic Cosmology” by Niayesh Afshordi, Claudio Corianò, Luigi Delle Rose, Elizabeth Gould, and Kostas Skenderis: Phys. Rev. Lett. 118, 041301 (2017) - Published 27 January 2017 (...Competing Interests: None declared.