Gravitational wave production at the end of inflation

被引:202
作者
Easther, Richard [1 ]
Giblin, John T., Jr. [1 ]
Lim, Eugene A. [1 ]
机构
[1] Yale Univ, Dept Phys, New Haven, CT 06520 USA
关键词
D O I
10.1103/PhysRevLett.99.221301
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We consider gravitational wave production due to parametric resonance at the end of inflation, or "preheating." This leads to large inhomogeneities that source a stochastic background of gravitational waves at scales inside the comoving Hubble horizon at the end of inflation. We confirm that the present amplitude of these gravitational waves need not depend on the inflationary energy scale. We analyze an explicit model where the inflationary energy scale is similar to 10(9) GeV, yielding a signal close to the sensitivity of Advanced Laser Interferometer Gravitational Wave Observatory and Big Bang Observer. This signal highlights the possibility of a new observational "window" into inflationary physics and provides significant motivation for searches for stochastic backgrounds of gravitational waves in the Hz to GHz range, with an amplitude on the order of Omega(gw)(k)h(2)similar to 10(-11).
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页数:4
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共 38 条
[31]   HYBRID INFLATION [J].
LINDE, A .
PHYSICAL REVIEW D, 1994, 49 (02) :748-754
[32]   Preheating and the Einstein field equations [J].
Parry, M ;
Easther, R .
PHYSICAL REVIEW D, 1999, 59 (06)
[33]   Equation of state and beginning of thermalization after preheating [J].
Podolsky, D ;
Felder, GN ;
Kofman, L ;
Peloso, M .
PHYSICAL REVIEW D, 2006, 73 (02)
[34]   Gravitational waves from warped spacetime [J].
Randall, Lisa ;
Servant, Geraldine .
JOURNAL OF HIGH ENERGY PHYSICS, 2007, (05)
[35]   Gravitational-wave stochastic background from cosmic strings [J].
Siemens, Xavier ;
Mandic, Vuk ;
Creighton, Jolien .
PHYSICAL REVIEW LETTERS, 2007, 98 (11)
[36]   PARTICLE-PRODUCTION DURING OUT-OF-EQUILIBRIUM PHASE-TRANSITIONS [J].
TRASCHEN, JH ;
BRANDENBERGER, RH .
PHYSICAL REVIEW D, 1990, 42 (08) :2491-2504
[37]   RELIC GRAVITATIONAL-WAVES AND EXTENDED INFLATION [J].
TURNER, MS ;
WILCZEK, F .
PHYSICAL REVIEW LETTERS, 1990, 65 (25) :3080-3083
[38]   Improved calculation of the primordial gravitational wave spectrum in the standard model [J].
Watanabe, Yuki ;
Komatsu, Eiichiro .
PHYSICAL REVIEW D, 2006, 73 (12)