Black Hole Evaporation Driven by Non-Thermal Squeezing Through SNS and CSNS Dynamics
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arXiv
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| Formato: | Preprint |
| Publicado: |
2025
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| author | Gangal, Dhwani Venkataratnam, K. K. |
| author_facet | Gangal, Dhwani Venkataratnam, K. K. |
| contents | In this work, we present a comprehensive semiclassical analysis of black hole radiation in a spatially flat FRW Universe for two fundamental nonclassical states: the Squeezed Number State (SNS) and the Coherent Squeezed Number State (CSNS). Unlike thermally modified earlier studies, SNS and CSNS constitute fully non-thermal, number-state-dependent quantum configurations. By embedding these states within the framework of semiclassical theory of gravity, we derive state-resolved expressions for the Hawking temperature, entropy variation, and corresponding mass loss of an evaporating black hole. The influence of the squeezing parameter $ρ$ and number state parameter $n$ on Hawking emission is examined through a series of analytical results supported by twelve detailed plots. The analysis reveals that the Hawking temperature exhibits monotonic growth with increasing $ρ$ and $n$, thereby elevating the effective temperature experienced at the black hole horizon. The entropy variations $Δ\mathbb{S}_{\mathrm{SNS}}$ and $Δ\mathbb{S}_{\mathrm{CSNS}}$ show strong nonlinear enhancement, especially at moderate and large squeezing values. Overall, the study extends earlier thermal squeezed-state approaches to a fully number-state-resolved framework, highlighting the sensitivity of Hawking emission to nonclassical quantum configurations. These findings contribute a new perspective on gravitational particle creation in cosmological settings. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_21014 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Black Hole Evaporation Driven by Non-Thermal Squeezing Through SNS and CSNS Dynamics Gangal, Dhwani Venkataratnam, K. K. General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics In this work, we present a comprehensive semiclassical analysis of black hole radiation in a spatially flat FRW Universe for two fundamental nonclassical states: the Squeezed Number State (SNS) and the Coherent Squeezed Number State (CSNS). Unlike thermally modified earlier studies, SNS and CSNS constitute fully non-thermal, number-state-dependent quantum configurations. By embedding these states within the framework of semiclassical theory of gravity, we derive state-resolved expressions for the Hawking temperature, entropy variation, and corresponding mass loss of an evaporating black hole. The influence of the squeezing parameter $ρ$ and number state parameter $n$ on Hawking emission is examined through a series of analytical results supported by twelve detailed plots. The analysis reveals that the Hawking temperature exhibits monotonic growth with increasing $ρ$ and $n$, thereby elevating the effective temperature experienced at the black hole horizon. The entropy variations $Δ\mathbb{S}_{\mathrm{SNS}}$ and $Δ\mathbb{S}_{\mathrm{CSNS}}$ show strong nonlinear enhancement, especially at moderate and large squeezing values. Overall, the study extends earlier thermal squeezed-state approaches to a fully number-state-resolved framework, highlighting the sensitivity of Hawking emission to nonclassical quantum configurations. These findings contribute a new perspective on gravitational particle creation in cosmological settings. |
| title | Black Hole Evaporation Driven by Non-Thermal Squeezing Through SNS and CSNS Dynamics |
| topic | General Relativity and Quantum Cosmology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2512.21014 |