| 词条 | Worldsheet |
| 释义 |
In string theory, a worldsheet is a two-dimensional manifold which describes the embedding of a string in spacetime.[1] The term was coined by Leonard Susskind around 1967 as a direct generalization of the world line concept for a point particle in special and general relativity. The type of string, the geometry of the spacetime in which it propagates, and the presence of long-range background fields (such as gauge fields) are encoded in a two-dimensional conformal field theory defined on the worldsheet. For example, the bosonic string in 26-dimensional Minkowski space{{clarify|Minkowski space is 4-dimensional, not 26|date=December 2016}} has a worldsheet conformal field theory consisting of 26 free scalar fields. Meanwhile, a superstring worldsheet theory in 10 dimensions consists of 10 free scalar fields and their fermionic superpartners. See also
References1. ^{{cite book|last1=Di Francesco|first1=Philippe|last2=Mathieu|first2=Pierre|last3=Sénéchal|first3=David|year=1997|isbn=978-1-4612-2256-9|title=Conformal Field Theory |doi=10.1007/978-1-4612-2256-9|page=8}} {{Physics-stub}} 1 : String theory |
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