Metastability of the false vacuum in a Higgs-seesaw model of dark energy
Metastability of the false vacuum in a Higgs-seesaw model of dark energy
复制标题
暗能量希格斯跷跷板模型中假真空的亚稳态
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
Australian National University
中科院分区：
文献类型：
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作者：
L. Krauss;A. A. O. Y. S. University;Australian National University
在最近提出的希格斯-SESAW模型中，观测到的暗能量尺度是由标准模型希格斯粒子和与新物理有关的标量在Gut或Planck尺度上混合产生的亚稳态虚假真空能量产生的。在这里，我们讨论了如何确保这种状态在宇宙时间内的亚稳性的问题。我们考虑了新的树级算符，隐藏扇形粒子热浴的存在，以及对有效势的量子修正。我们发现，在热场景中，除非微调耦合常数，否则通常需要许多额外的光自由度。然而，由一个额外的光标量场引起的量子修正可以提供必要的支持。在这个模型中，我们还简要地考虑了晚时间真空衰变对宇宙中观察到的结构的持久性的影响。
In a recently proposed Higgs-Seesaw model the observed scale of dark energy results from a metastable false vacuum energy associated with mixing of the standard model Higgs particle and a scalar associated with new physics at the GUT or Planck scale. Here we address the issue of how to ensure metastability of this state over cosmological time. We consider new tree-level operators, the presence of a thermal bath of hidden sector particles, and quantum corrections to the effective potential. We find that in the thermal scenario many additional light degrees of freedom are typically required unless coupling constants are somewhat fine-tuned. However quantum corrections arising from as few as one additional light scalar field can provide the requisite support. We also briefly consider implications of late-time vacuum decay for the perdurance of observed structures in the universe in this model.
DOI：
10.1088/0004-637x/763/2/88
发表时间：
2012-11
期刊：
The Astrophysical Journal
影响因子：
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作者：
H. Campbell;C. D'Andrea;R. Nichol;M. Sako;Mathew Smith;H. Lampeitl;M. Olmstead;B. Bassett;R. Biswas;P. Brown;D. Cinabro;K. Dawson;B. Dilday;R. Foley;J. Frieman;P. Garnavich;R. Hložek;S. Jha;S. Kuhlmann;M. Kunz;J. Marriner;R. Miquel;M. Richmond;A. Riess;D. Schneider;J. Sollerman;Matt G. G. T. Taylor-Matt-G.-G.-T.-Taylor-39069535;Gong-Bo Zhao
通讯作者：
H. Campbell;C. D'Andrea;R. Nichol;M. Sako;Mathew Smith;H. Lampeitl;M. Olmstead;B. Bassett;R. Biswas;P. Brown;D. Cinabro;K. Dawson;B. Dilday;R. Foley;J. Frieman;P. Garnavich;R. Hložek;S. Jha;S. Kuhlmann;M. Kunz;J. Marriner;R. Miquel;M. Richmond;A. Riess;D. Schneider;J. Sollerman;Matt G. G. T. Taylor-Matt-G.-G.-T.-Taylor-39069535;Gong-Bo Zhao