On the curious spectrum of duality invariant higherderivative gravity
Here, we analyze the spectrum of the exactly duality and gauge invariant higherderivative double field theory. While this theory is based on a chiral CFT and does not correspond to a standard string theory, our analysis illuminates a number of issues central in string theory. The full quadratic action is rewritten as a twoderivative theory with additional fields. This allows for a simple analysis of the spectrum, which contains two massive spin2 ghosts and massive scalars, in addition to the massless fields. Moreover, in this formulation, the massless or tensionless limit α' → ∞ is nonsingular and leads to an enhanced gauge symmetry. We show that the massive modes can be integrated out exactly at the quadratic level, leading to an infinite series of higherderivative corrections. Lastly, we present a ghostfree massive extension of linearized double field theory, which employs a novel mass term for the dilaton and metric.
 Authors:

^{[1]};
^{[2]};
^{[2]}
 Stony Brook Univ., Stony Brook, NY (United States)
 Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
 Publication Date:
 Grant/Contract Number:
 SC0012567
 Type:
 Accepted Manuscript
 Journal Name:
 Journal of High Energy Physics (Online)
 Additional Journal Information:
 Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2016; Journal Issue: 8; Journal ID: ISSN 10298479
 Publisher:
 Springer Berlin
 Research Org:
 Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
 Sponsoring Org:
 USDOE Office of Science (SC)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; effective field theories; string duality
 OSTI Identifier:
 1362134
Hohm, Olaf, Naseer, Usman, and Zwiebach, Barton. On the curious spectrum of duality invariant higherderivative gravity. United States: N. p.,
Web. doi:10.1007/JHEP08(2016)173.
Hohm, Olaf, Naseer, Usman, & Zwiebach, Barton. On the curious spectrum of duality invariant higherderivative gravity. United States. doi:10.1007/JHEP08(2016)173.
Hohm, Olaf, Naseer, Usman, and Zwiebach, Barton. 2016.
"On the curious spectrum of duality invariant higherderivative gravity". United States.
doi:10.1007/JHEP08(2016)173. https://www.osti.gov/servlets/purl/1362134.
@article{osti_1362134,
title = {On the curious spectrum of duality invariant higherderivative gravity},
author = {Hohm, Olaf and Naseer, Usman and Zwiebach, Barton},
abstractNote = {Here, we analyze the spectrum of the exactly duality and gauge invariant higherderivative double field theory. While this theory is based on a chiral CFT and does not correspond to a standard string theory, our analysis illuminates a number of issues central in string theory. The full quadratic action is rewritten as a twoderivative theory with additional fields. This allows for a simple analysis of the spectrum, which contains two massive spin2 ghosts and massive scalars, in addition to the massless fields. Moreover, in this formulation, the massless or tensionless limit α' → ∞ is nonsingular and leads to an enhanced gauge symmetry. We show that the massive modes can be integrated out exactly at the quadratic level, leading to an infinite series of higherderivative corrections. Lastly, we present a ghostfree massive extension of linearized double field theory, which employs a novel mass term for the dilaton and metric.},
doi = {10.1007/JHEP08(2016)173},
journal = {Journal of High Energy Physics (Online)},
number = 8,
volume = 2016,
place = {United States},
year = {2016},
month = {8}
}