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          Institute: MPI für Gravitationsphysik     Collection: Quantum Gravity and Unified Theories     Display Documents



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ID: 379748.0, MPI für Gravitationsphysik / Quantum Gravity and Unified Theories
Tensionless gravitational string in $D=6$, $N=1$ heterotic string vacua
Authors:Kim, Nakwoo; Rey, Soo-Jong; Theisen, Stefan; Yankielowicz, Shimon
Publisher:World Scientific
Place of Publication:Singapore [u.a.]
Date of Publication (YYYY-MM-DD):1998
Title of Proceedings:Proceedings of the APCTP Winter School Dualities in Gauge and String Theories : Sorak Mountain Resort, Korea, 17 - 28 February 1997
Start Page:382
End Page:389
Name of Conference/Meeting:APCTP Winter School Dualities in Gauge and String Theories
Place of Conference/Meeting:Seoul/Sokcho, Korea
(Start) Date of Conference/Meeting
 (YYYY-MM-DD):
1997-02-17
End Date of Conference/Meeting 
 (YYYY-MM-DD):
1997-02-28
Review Status:not specified
Audience:Not Specified
Abstract / Description:Summary: We study the non-perturbative Coulomb phase of $D=6$, $N=1$ heterotic string vacua with more than one tensor multiplet. We find that, for $n_T>9$, the Coulomb branch is divided by a codimension-one hypersurface, across which the coupling of gravitational curvature-squared term changes sign. We find a new class of BPS soliton strings whose core is supported by a gravitational instanton, i.e. a self-dual gravitational string. For $n_T>9$, tension of the string vanishes at a codimension-one hypersurface. We suggest that the tensionless gravitational string might be related to a novel infrared phase of quantum gravity.
External Publication Status:published
Document Type:Conference-Paper
Communicated by:Hermann Nicolai
Affiliations:MPI für Gravitationsphysik/Quantum Gravity and Unified Theories
Identifiers:ISBN:981-02-3586-0
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