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Can I read Stringy Fuzziness as the Custodian of Time-space Noncommutativity on EtoBox?
Stringy Fuzziness as the Custodian of Time-space Noncommutativity by J.L.F Barbón; E Rabinovici is a Physics and Astronomy article available to read on EtoBox.
What is Stringy Fuzziness as the Custodian of Time-space Noncommutativity about?
We study aspects of obtaining field theories with noncommuting time-space coordinates as limits of open-string theories in constant electric-field backgrounds. We find that, within the standard closed-string backgrounds, there is an obstruction to decoupling the time-space noncommutativity scale from that of the string fuzziness scale. We speculate that this censorship may be string-theory's way of protecting the causality and unitarity structure. We study the moduli space of the obstruction in terms of the open-and closed-string backgrounds. Cases of both zero and infinite brane tensions as well as zero string couplings are obtained. A decoupling can be achieved formally by considering complex values of the dilaton and inverting the role of space and time in the light cone. This is reminiscent of a black-hole horizon. We study the corresponding supergravity solution in the large-N limit and find that the geometry has a naked singularity at the physical scale of noncommutativity.
Who reads Stringy Fuzziness as the Custodian of Time-space Noncommutativity?
It is typically read by researchers, students, and practitioners in Physics and Astronomy.
- Author
- J.L.F Barbón; E Rabinovici
- Publisher
- Elsevier Science; Elsevier ; Elsevier BV (ISSN 0370-2693)
- Published
- 2000
- Language
- EN
- Field
- Physics and Astronomy (Physical Sciences)