2009
DOI: 10.1103/physrevd.80.084046
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Flavor condensates in brane models and dark energy

Abstract: In the context of a microscopic model of string-inspired foam, in which foamy structures are provided by brany point-like defects (D-particles) in space-time, we discuss flavour mixing as a result of flavour non-preserving interactions of (low-energy) fermionic stringy matter excitations with the defects. Such interactions involve splitting and capture of the matter string state by the defect, and subsequent re-emission. As a result of charge conservation, only electrically neutral matter can interact with the… Show more

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Cited by 33 publications
(57 citation statements)
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References 55 publications
(112 reference statements)
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“…The equation of state p = wρ (with p pressure and ρ energy density), associated with the flavour vacuum was found to have w = −1 (on using a suitable regularisation). In [2] we claimed that such a behaviour would characterize also the 3+1 dimensional case, in a generic Friedmann-Robertson-Walker (FRW) universe. Moreover, we analyzed a theory with two Dirac fields (complex spin 1/2) on a 3+1 dimensional FRW universe.…”
Section: Introductionmentioning
confidence: 99%
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“…The equation of state p = wρ (with p pressure and ρ energy density), associated with the flavour vacuum was found to have w = −1 (on using a suitable regularisation). In [2] we claimed that such a behaviour would characterize also the 3+1 dimensional case, in a generic Friedmann-Robertson-Walker (FRW) universe. Moreover, we analyzed a theory with two Dirac fields (complex spin 1/2) on a 3+1 dimensional FRW universe.…”
Section: Introductionmentioning
confidence: 99%
“…We have, in an earlier work [1,2], investigated the behaviour of an effective vacuum condensate in a field theory arising from a brane model of space-time foam (D-Particle Foam Model ). Within a Brane-World context (cf.…”
Section: Introductionmentioning
confidence: 99%
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