Post-Newtonian Feasibility of the Closed String Massless Sector

Kang Sin Choi, Jeong Hyuck Park

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We perform post-Newtonian analysis of double field theory as a test of string theory in gravitational sector against observations. We identify the Eddington-Robertson-Schiff parameters βPPN, γPPN with the charges of electric H flux and dilaton respectively, and further relate them to stress-energy tensor. We show βPPN=1 from weak energy condition and argue that the observation of γPPN≃1 signifies the ultrarelativistic equation of state in baryons, or the suppression of gluon condensate.

Original languageEnglish
Article number061603
JournalPhysical Review Letters
Volume129
Issue number6
DOIs
StatePublished - 5 Aug 2022

Bibliographical note

Publisher Copyright:
© 2022 authors. Published by the American Physical Society.

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