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Title: Emergence of Weak Coupling at Large Distance in Quantum Gravity

Abstract

The Ooguri-Vafa swampland conjectures claim that in any consistent theory of quantum gravity, when venturing to large distances in scalar field space, a tower of particles will become light at a rate that is exponential in the field-space distance. We provide a novel viewpoint on this claim: If we assume that a tower of states becomes light near a particular point in field space, and we further demand that loop corrections drive both gravity and the scalar to strong coupling at a common energy scale, then the requirement that the particles become light exponentially fast in the field-space distance in Planck units follows automatically. Furthermore, the same assumption of a common strong-coupling scale for scalar fields and gravitons implies that, when a scalar field evolves over a super-Planckian distance, the average particle mass changes by an amount of the order of the cutoff energy. This supports earlier suggestions that significantly super-Planckian excursions in field space cannot be described within a single effective field theory. We comment on the relationship of our results to the weak gravity conjecture.

Authors:
 [1];  [2];  [3]
  1. Perimeter Inst. for Theoretical Physics, Waterloo, ON (Canada)
  2. Harvard Univ., Cambridge, MA (United States). Dept. of Physics
  3. School of Natural Sciences, Princeton, NJ (United States). Inst. for Advanced Study
Publication Date:
Research Org.:
Harvard Univ., Cambridge, MA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1462782
Alternate Identifier(s):
OSTI ID: 1498972
Grant/Contract Number:  
SC0013607
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 121; Journal Issue: 5; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Heidenreich, Ben, Reece, Matthew, and Rudelius, Tom. Emergence of Weak Coupling at Large Distance in Quantum Gravity. United States: N. p., 2018. Web. doi:10.1103/physrevlett.121.051601.
Heidenreich, Ben, Reece, Matthew, & Rudelius, Tom. Emergence of Weak Coupling at Large Distance in Quantum Gravity. United States. doi:10.1103/physrevlett.121.051601.
Heidenreich, Ben, Reece, Matthew, and Rudelius, Tom. Fri . "Emergence of Weak Coupling at Large Distance in Quantum Gravity". United States. doi:10.1103/physrevlett.121.051601.
@article{osti_1462782,
title = {Emergence of Weak Coupling at Large Distance in Quantum Gravity},
author = {Heidenreich, Ben and Reece, Matthew and Rudelius, Tom},
abstractNote = {The Ooguri-Vafa swampland conjectures claim that in any consistent theory of quantum gravity, when venturing to large distances in scalar field space, a tower of particles will become light at a rate that is exponential in the field-space distance. We provide a novel viewpoint on this claim: If we assume that a tower of states becomes light near a particular point in field space, and we further demand that loop corrections drive both gravity and the scalar to strong coupling at a common energy scale, then the requirement that the particles become light exponentially fast in the field-space distance in Planck units follows automatically. Furthermore, the same assumption of a common strong-coupling scale for scalar fields and gravitons implies that, when a scalar field evolves over a super-Planckian distance, the average particle mass changes by an amount of the order of the cutoff energy. This supports earlier suggestions that significantly super-Planckian excursions in field space cannot be described within a single effective field theory. We comment on the relationship of our results to the weak gravity conjecture.},
doi = {10.1103/physrevlett.121.051601},
journal = {Physical Review Letters},
number = 5,
volume = 121,
place = {United States},
year = {2018},
month = {8}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1103/physrevlett.121.051601

Citation Metrics:
Cited by: 24 works
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    Works referencing / citing this record:

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