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Title: On the curious spectrum of duality invariant higher-derivative gravity

Here, we analyze the spectrum of the exactly duality and gauge invariant higher-derivative 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 two-derivative theory with additional fields. This allows for a simple analysis of the spectrum, which contains two massive spin-2 ghosts and massive scalars, in addition to the massless fields. Moreover, in this formulation, the massless or tensionless limit α' → ∞ is non-singular 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 higher-derivative corrections. Lastly, we present a ghost-free massive extension of linearized double field theory, which employs a novel mass term for the dilaton and metric.
Authors:
 [1] ;  [2] ;  [2]
  1. Stony Brook Univ., Stony Brook, NY (United States)
  2. 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 1029-8479
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 higher-derivative 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 higher-derivative gravity. United States. doi:10.1007/JHEP08(2016)173.
Hohm, Olaf, Naseer, Usman, and Zwiebach, Barton. 2016. "On the curious spectrum of duality invariant higher-derivative 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 higher-derivative gravity},
author = {Hohm, Olaf and Naseer, Usman and Zwiebach, Barton},
abstractNote = {Here, we analyze the spectrum of the exactly duality and gauge invariant higher-derivative 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 two-derivative theory with additional fields. This allows for a simple analysis of the spectrum, which contains two massive spin-2 ghosts and massive scalars, in addition to the massless fields. Moreover, in this formulation, the massless or tensionless limit α' → ∞ is non-singular 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 higher-derivative corrections. Lastly, we present a ghost-free 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}
}