What does ORIENTIFOLD mean?
Definitions for ORIENTIFOLD
ori·en·tifold
This dictionary definitions page includes all the possible meanings, example usage and translations of the word ORIENTIFOLD.
Wiktionary
orientifoldnoun
An oriented generalization of an orbifold
Wikidata
Orientifold
In theoretical physics orientifold is a generalization of the notion of orbifold, proposed by Augusto Sagnotti in 1987. The novelty is that in the case of string theory the non-trivial element of the orbifold group includes the reversal of the orientation of the string. Orientifolding therefore produces unoriented strings—strings that carry no "arrow" and whose two opposite orientations are equivalent. Type I string theory is the simplest example of such a theory and can be obtained by orientifolding type IIB string theory. In mathematical terms, given a smooth manifold, two discrete, freely acting, groups and and the worldsheet parity operator an orientifold is expressed as the quotient space . If is empty, then the quotient space is an orbifold. If is not empty, then it is an orientifold.
Numerology
Chaldean Numerology
The numerical value of ORIENTIFOLD in Chaldean Numerology is: 2
Pythagorean Numerology
The numerical value of ORIENTIFOLD in Pythagorean Numerology is: 1
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"ORIENTIFOLD." Definitions.net. STANDS4 LLC, 2024. Web. 23 Sep. 2024. <https://www.definitions.net/definition/ORIENTIFOLD>.
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