期刊
PHYSICAL REVIEW LETTERS
卷 129, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.129.061603
关键词
-
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF) [NRF-2016R1D1A1B01015196, NRF-2018R1A2B2007163, NRF-2020R1A6A1A03047877]
We perform a post-Newtonian analysis of double field theory to test string theory in the gravitational sector against observations. We identify the Eddington-Robertson-Schiff parameters beta(PPN) and gamma(PPN) with the charges of electric H flux and dilaton respectively, and further relate them to the stress-energy tensor. We show that beta(PPN) = 1 from the weak energy condition and argue that the observation of gamma(PPN) similar or equal to 1 signifies the occurrence of an ultrarelativistic equation of state in baryons or the suppression of gluon condensate.
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 beta(PPN), gamma(PPN) with the charges of electric H flux and dilaton respectively, and further relate them to stress-energy tensor. We show beta(PPN) = 1 from weak energy condition and argue that the observation of gamma(PPN) similar or equal to 1 signifies the ultrarelativistic equation of state in baryons, or the suppression of gluon condensate.
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