ISSN:
1572-9532
Keywords:
Variable light velocity
;
D-branes
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Motivated by the possible experimental opportunities to test quantum gravity via its effects on high-energy neutrinos propagating through space-time foam, we discuss how to incorporate spin structures in our D-brane description of gravitational recoil effects in vacuo. We also point to an interesting analogous condensed-matter system. We use a suitable supersymmetrization of the Born-Infeld action for excited D-brane gravitational backgrounds to argue that energetic fermions may travel slower than the low-energy velocity of light: δc/c ∼ −E/M. It has been suggested that Gamma-Ray Bursters may emit pulses of neutrinos at energies approaching 1019 eV: these would be observable only if M ≳ 1027 GeV.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1001980530113
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