"The Wick rotation idea is now so commonly used in quantum field theory that it is often taken as an automatic procedure in numerous different kinds of situation, with barely a mention, and its validity is hardly ever questioned. It does, in fact, have a broad applicability, but it is not a universally valid procedure. Most particularly. it is highly questionable in the context of the curved space-times arising in general relativity, when in normal circumstances the procedure cannot even be applied, because there is no natural time coordinate. In string theory, this is a problem both in the 10-dimensional space-time, in general curved-space situations, and also in the string world-sheet ..."
Quote Details
Added by wikiquote-import-bot
Unverified quote
0 likes
Original Language: English
Available Languages (1)
Sources
Roger Penrose:
https://en.wikiquote.org/wiki/Wick_rotation
Revision History
No revisions have been submitted for this quote.
Categories
Wick rotation
3 quotes on TrueQuotesView all quotes by Wick rotation →
Related Quotes
"Wick rotation is a very basic procedure for inter-playing Lorentzian and Riemannian geometry. The simplest example ap…"
"The celebrated Schrödinger equation is mathematically close to the ordinary diffusion equation. What is the main diff…"
"... was formalized by a number of authors ... as the requirement that the wave function of a multi-electron system is…"
"What is the empirical content of quantum mechanics? Or how does the wave function assigned to a relate to the results…"
"… what is the wave function? Is it a complete and comprehensive representation of the world? Or do we need additional…"
"It has been known for some time that the Yang-Baxter equations can be solved using s. More recently it was discovered…"
"At an early stage the Yang-Baxter equation (YBE) appeared in several different guises in the literature, and sometime…"
"The origins of es is one of the biggest mysteries in modern physics since they are beyond the realm of the Standard M…"
"... Roughly speaking, in renormalizable theories no coupling constants can have the dimensions of negative powers of …"
"That the pion-nucleon (πN) coupling constant is fundamental in our understanding of the Cosmos has been adequately em…"