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The inflationary era is mostly relates to classical gravity in FRW universe. In this study, we explore the behavior of a nonclassical scalar field in the context of Friedmann-Robertson-Walker (FRW) universe. We represented the massive inflaton field in SCTG using a Coherent Squeezed Vacuum State (CSVS). This state provides insight into quantum fluctuations, which play a critical role in the early universe, influencing cosmic inflation, structure formation, and the evolution of the universe. Mandel’s \(\mathbb {Q}\) parameter is useful for examining the nonclassical nature of the inflaton field. Hence, we investigated Mandel’s \(\mathbb {Q}\) parameter in cosmological reference with related cosmological parameters for CSVS.

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Nonclassical Nature of Coherent Squeezed Vacuum State in the Oscillating FRW Universe

  • 会议论文

  • 发表日期：

    2025年

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  • Dhwani Gangal,
  • K. K. Venkataratnam

摘要

The inflationary era is mostly relates to classical gravity in FRW universe. In this study, we explore the behavior of a nonclassical scalar field in the context of Friedmann-Robertson-Walker (FRW) universe. We represented the massive inflaton field in SCTG using a Coherent Squeezed Vacuum State (CSVS). This state provides insight into quantum fluctuations, which play a critical role in the early universe, influencing cosmic inflation, structure formation, and the evolution of the universe. Mandel’s \(\mathbb {Q}\) parameter is useful for examining the nonclassical nature of the inflaton field. Hence, we investigated Mandel’s \(\mathbb {Q}\) parameter in cosmological reference with related cosmological parameters for CSVS.