Post-Newtonian Feasibility of the Closed String Massless Sector

被引：5
|
作者：
Choi, Kang-Sin [1 ,2 ]
Park, Jeong-Hyuck [3 ]
机构：
[1] Ewha Womans Univ, Scranton Honors Program, Seoul 03760, South Korea
[2] Ewha Womans Univ, Inst Math Sci, Seoul 03760, South Korea
[3] Sogang Univ, Dept Phys, 35 Baekbeom ro, Seoul 04107, South Korea
来源：
PHYSICAL REVIEW LETTERS | 2022年 / 129卷 / 06期
基金：
新加坡国家研究基金会;
关键词：
RELATIVISTIC GRAVITY; GENERAL-RELATIVITY; DUALITY; DECAYS; FORMULATION; RULE;
D O I：
10.1103/PhysRevLett.129.061603
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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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页数：7
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