منابع مشابه
Casimir Force in Compact Noncommutative Extra Dimensions and Radius Stabilization
We compute the one loop Casimir energy of an interacting scalar field in a compact noncommutative space of R × T 2 θ , where we have ordinary flat 1 + d dimensional Minkowski space and two dimensional noncommuative torus. We find that next order correction due to the noncommutativity still contributes an attractive force and thus will have a quantum instability. However, the case of vector fiel...
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We study field theories on spaces with additional compact noncommutative dimensions. As an example, we study φ on R × T 2 θ using perturbation theory. The infrared divergences in the noncompact theory give rise to unusual dynamics for the mode of φ which is constant along the torus. Correlation functions involving this mode vanish. Moreover, we show that the spectrum of Kaluza-Klein excitations...
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We study the possibility that dark energy is a manifestation of the Casimir energy on extra dimensions with the topology of S. We consider our universe to be M × S and modify the geometry by introducing noncommutativity on the extra dimensions only, i.e. replacing S with the fuzzy version S F . We find the energy density as a function of the size of the representation M +1 of the algebra of S F...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2002
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.65.075007