Распад Ложного Вакуума В Пространстве-Времени Де Ситтера

Рубаков, Валерий А.; Сибиряков, Сергей Михайлович; Sibiryakov, Sergey

doi:10.4213/tmf790

ТМФ

1999

DOI: 10.4213/tmf790

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Распад Ложного Вакуума В Пространстве-Времени Де Ситтера

Валерий А. Рубаков¹,

Сергей Михайлович Сибиряков²,

Sergey Sibiryakov³

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Cited by 5 publications

References 11 publications

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Multi-field open inflation model and multi-field dynamics in tunneling

Sugimura¹,

Yamauchi²,

Sasaki³

2012

J. Cosmol. Astropart. Phys.

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We consider a multi-field open inflation model, in which one of the fields dominates quantum tunneling from a false vacuum while the other field governs slow-roll inflation within the bubble nucleated from false vacuum decay. We call the former the tunneling field and the latter the inflaton field. In the limit of a negligible interaction between the two fields, the false vacuum decay is described by a Coleman-De Luccia instanton. Here we take into account the coupling between the two fields and construct explicitly a multi-field instanton for a simple quartic potential model. We also solve the evolution of the scalar fields within the bubble. We find our model realizes open inflation successfully. This is the first concrete, viable model of open inflation realized with a simple potential. We then study the effect of the multi-field dynamics on the false vacuum decay, specifically on the tunneling rate. We find the tunneling rate increases in general provided that the multi-field effect can be treated perturbatively.

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Multi-field open inflation model and multi-field dynamics in tunneling

Sugimura¹,

Yamauchi²,

Sasaki³

2012

J. Cosmol. Astropart. Phys.

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Thermal false vacuum decay around black holes

2022

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Fluctuations about cosmological instantons

Dunne

Wang

2006

Phys. Rev. D

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We study the semiclassical fluctuation problem around bounce solutions for a self-interacting scalar field in curved space. As in flat space, the fluctuation problem separates into partial waves labeled by an integer l, and we determine the large l behavior of the fluctuation determinants, a quantity needed to define a finite fluctuation prefactor. We also show that while the ColemanDe Luccia bounce solution has a single negative mode in the l = 0 sector, the oscillating bounce solutions also have negative modes in partial waves higher than the s-wave, further evidence that they are not directly related to quantum tunneling.

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Распад Ложного Вакуума В Пространстве-Времени Де Ситтера

Cited by 5 publications

References 11 publications

Multi-field open inflation model and multi-field dynamics in tunneling

Multi-field open inflation model and multi-field dynamics in tunneling

Thermal false vacuum decay around black holes

Fluctuations about cosmological instantons

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