Reheating of the universe after inflation with f(phi)R gravity: Spontaneous decay of inflatons to bosons, fermions, and gauge bosons

Reheating of the universe after inflation with f(phi)R gravity: Spontaneous decay of inflatons to bosons, fermions, and gauge bosons
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膨胀后的宇宙在 f(phi)R 引力作用下重新加热:膨胀子自发衰变为玻色子、费米子和规范玻色子

DOI:
10.1103/physrevd.75.061301
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发表时间:
2006
期刊:
--
影响因子:
--
通讯作者:
E. Komatsu
E. Komatsu
中科院分区:
--
文献类型:
--
作者:
Yuki Watanabe;E. Komatsu

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我们证明了宇宙的再加热在一个广泛的暴胀模型中自发地发生,其中f(\ensuremath{\phi})R$引力($\ensuremath{\phi}$是暴胀子)。该模型不需要$\ensuremath{\phi}$和玻色子或费米子物质场之间的显式耦合。当$\ensuremath{\phi}$稳定在真空期望值(vev)并振荡时,耦合会自发产生,耦合常数由$f(\ensuremath{\phi})$在vev处的导数以及由此产生的玻色子场或费米子场的质量给出。这种机制允许暴胀子量子衰变到任何在f(\ensuremath{\phi})R$引力理论中不是共形不变的场。
We show that reheating of the universe occurs spontaneously in a broad class of inflation models with $f(\ensuremath{\phi})R$ gravity ($\ensuremath{\phi}$ is the inflaton). The model does not require explicit couplings between $\ensuremath{\phi}$ and bosonic or fermionic matter fields. The couplings arise spontaneously when $\ensuremath{\phi}$ settles in the vacuum expectation value (vev) and oscillates, with coupling constants given by derivatives of $f(\ensuremath{\phi})$ at the vev and the mass of resulting bosonic or fermionic fields. This mechanism allows inflaton quanta to decay into any fields which are not conformally invariant in $f(\ensuremath{\phi})R$ gravity theories.
DOI: 10.1103/physrevd.70.103511
发表时间: 2004-06
期刊: Physical Review D
影响因子: 5
作者:
J. Yokoyama
通讯作者: J. Yokoyama
振荡标量场能否衰变成具有大热质量的粒子?
DOI: --
发表时间: 2006
期刊: Physics Letters B 635巻2号
影响因子: --
作者:
Hagino;M.;横山順一
通讯作者: 横山順一