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Quantum coherent oscillations in the early universe

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摘要

Cosmic inflation is commonly assumed to be driven by quantum fields. Quantum mechanics predicts phenomena such as quantum fluctuations and tunneling of the field. Here, we show an example of a quantum interference effect which goes beyond the semiclassical treatment and which may be of relevance in the early Universe. We study the quantum coherent dynamics for a tilted, periodic potential, which results in genuine quantum oscillations of the inflaton field, analogous to Bloch oscillations in condensed matter and atomic systems. The underlying quantum superpositions are typically very fragile but may persist in the early Universe giving rise to quantum interference phenomena in cosmology.

著录项

  • 来源
    《Physical review, D》 |2016年第10期|共6页
  • 作者

    Pikovski Igor; Loeb Abraham;

  • 作者单位

    Harvard Smithsonian Ctr Astrophys, ITAMP, 60 Garden St, Cambridge, MA 02138 USA;

    Harvard Smithsonian Ctr Astrophys, ITC, 60 Garden St, Cambridge, MA 02138 USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 英语
  • 中图分类 粒子物理学;场论;
  • 关键词

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