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 language | English |
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Article number | 061603 |
Journal | Physical Review Letters |
Volume | 129 |
Issue number | 6 |
DOIs | |
State | Published - 5 Aug 2022 |
Bibliographical note
Publisher Copyright:© 2022 authors. Published by the American Physical Society.