New Sources of Gravitational Waves During Inflation

Senatore, Leonardo ; Silverstein, Eva ; /Stanford U., Phys. Dept. /SLAC ; Zaldarriaga, Matias ; /Princeton, Inst. Advanced Study

关键词: AMPLITUDES;    COSMOLOGY;    DEGREES OF FREEDOM;    DETECTION;    EXCITED STATES;    FLUCTUATIONS;    GRAVITATIONAL RADIATION;    GRAVITATIONAL WAVES;    GRAVITY WAVES;    METRICS;    POLARIZATION;    POTENTIAL ENERGY;    SCALARS Astrophysics;    Gravitation and Cosmology;    Theory-HEP;    HEPTH;    ASTRO;    GRQC;   

DOI  :  10.2172/1035109
RP-ID  :  SLAC-PUB-14551
PID  :  OSTI ID: 1035109
Others  :  Other: arXiv:1109.0542
Others  :  TRN: US201204%%647

学科分类：天文学(综合)

美国|英语

来源: SciTech Connect

【 摘 要 】

We point out that detectable inflationary tensor modes can be generated by particle or string sources produced during inflation, consistently with the requirements for inflation and constraints from scalar fluctuations. We show via examples that this effect can dominate over the contribution from quantum fluctuations of the metric, occurring even when the inflationary potential energy is too low to produce a comparable signal. Thus a detection of tensor modes from inflation does not automatically constitute a determination of the inflationary Hubble scale.