scholarly journals Ultralocal fields and their relevance for reparametrization-invariant quantum field theory

2001 ◽  
Vol 34 (15) ◽  
pp. 3277-3287 ◽  
Author(s):  
John R Klauder
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Quantum Field ◽  
Invariant Quantum

scholarly journals TOWARDS A CPT INVARIANT QUANTUM FIELD THEORY ON ELLIPTIC DE SITTER SPACE

2008 ◽  
Vol 23 (12) ◽  
pp. 1821-1838 ◽  
Author(s):  
ZHE CHANG ◽  
XIN LI
Keyword(s):  
Field Theory ◽  
Quantum Field Theory ◽  
Complete Information ◽  
De Sitter Space ◽  
Quantum Field ◽  
De Sitter ◽  
Cpt Invariance ◽  
Spinor Fields ◽  
Invariant Quantum ◽  
Antipodal Identification

Consequences of Schrödinger's antipodal identification on quantum field theory in de Sitter space are investigated. The elliptic ℤ2 identification provides observers with complete information. We show that a suitable confinement on dimension of the elliptic de Sitter space guarantees the existence of globally defined spinors and orientable dS/ℤ2 manifold. In Beltrami coordinates, we give exact solutions of scalar and spinor fields. The CPT invariance of quantum field theory on the elliptic de Sitter space is presented explicitly.

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