Eikonal particle scattering and dilaton gravity

Simple item page
dc.contributor.authorDas, Saurya
dc.contributor.authorMajumdar, Parthasarathi
dc.date.accessioned2016-04-14T17:59:50Z
dc.date.available2016-04-14T17:59:50Z
dc.date.issued1997
dc.descriptionSherpa Romeo green journal. Permission to archive final published version.en_US
dc.description.abstractApproximating light charged pointlike particles in terms of ~nonextremal! dilatonic black holes is shown to lead to certain pathologies in Planckian scattering in the eikonal approximation, which are traced to the presence of a ~naked! curvature singularity in the metric of these black holes. The existence of such pathologies is confirmed by analyzing the problem in an ‘‘external metric’’ formulation where an ultrarelativistic point particle scatters off a dilatonic black hole geometry at large impact parameters. The maladies disappear almost trivially upon imposing the extremal limit. Attempts to derive an effective three-dimensional ‘‘boundary’’ field theory in the eikonal limit are stymied by four-dimensional ~bulk! terms proportional to the light-cone derivatives of the dilaton field, leading to nontrivial mixing of electromagnetic and gravitational effects, in contrast with the case of general relativity. An eikonal scattering amplitude, showing decoupling of these effects, is shown to be derivable by resummation of graviton, dilaton, and photon exchange ladder diagrams in a linearized version of the theory for an asymptotic value of the dilaton field which makes the string coupling constant nonperturbative.en_US
dc.description.peer-reviewYesen_US
dc.identifier.citationDas. S., & Majumdar, P. (1997). Eikonal particle scattering and dilaton gravity. Physical review D, 55(4), 2090-2098. http://dx.doi.org/10.1103/PhysRevD.55.2090en_US
dc.identifier.urihttps://hdl.handle.net/10133/4468
dc.language.isoen_CAen_US
dc.publisherAmerican Physical Societyen_US
dc.publisher.institutionInstitute of Mathematical Sciences (India)en_US
dc.publisher.urlhttps://doi.org/10.1103/PhysRevD.55.2090
dc.subjectEikonal scatteringen_US
dc.subjectDilatonen_US
dc.subjectBlack holesen_US
dc.titleEikonal particle scattering and dilaton gravityen_US
dc.typeArticleen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Das Eikonal particle scattering and dilaton gravity.pdf
Size:
125.84 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
3.13 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Das, Saurya