广义不确定性原理对 MIT 袋模型状态方程的影响

IF 1.1 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS Astronomische Nachrichten Pub Date : 2024-02-08 DOI:10.1002/asna.20240016
Marcelo Netz-Marzola, César A. Zen Vasconcellos, Dimiter Hadjimichef
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引用次数: 0

摘要

广义不确定性原理(GUP)的前提是普朗克尺度附近的时空波动对可实现的距离分辨率施加了下限,从而导致了最小长度。我们受到一种半经典方法的启发,这种方法通过对相空间的变形将 GUP 整合到分区函数中,从而对麻省理工包模型的热力学量进行了修改,我们提出这种修改可以作为对最小长度空间中去封闭夸克物质的有效半经典描述。我们研究了这种变形对零温极限的影响,揭示了能量密度、压力和重子数密度的饱和极限,以及热力学量的整体下降,这表明对引力坍缩的稳定性增强了。这些发现扩展了现有的关于 GUP 变形费米气体的研究。最终,我们的描述以数学上简单的方式在紧凑恒星的状态方程中引入了量子引力的效应,这表明它有可能扩展到更复杂的系统。
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Effects of a generalized uncertainty principle on the MIT bag model equation of state

The Generalized Uncertainty Principle (GUP) is motivated by the premise that spacetime fluctuations near the Planck scale impose a lower bound on the achievable resolution of distances, leading to a minimum length. Inspired by a semiclassical method that integrates the GUP into the partition function by deforming its phase space, we induce a modification on the thermodynamic quantities of the MIT bag model that we propose serves as an effective semiclassical description of deconfined quark matter in a space with minimal length. We investigate the consequences of this deformation on the zero-temperature limit, revealing a saturation limit for the energy density, pressure, and baryon number density and an overall decrease of the thermodynamic quantities which suggests an enhanced stability against gravitational collapse. These findings extend existing research on GUP-deformed Fermi gases. Ultimately, our description introduces the effects of quantum gravity in the equations of state for compact stars in a mathematically simple manner, suggesting the potential for extension to more complex systems.

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来源期刊
Astronomische Nachrichten
Astronomische Nachrichten 地学天文-天文与天体物理
CiteScore
1.80
自引率
11.10%
发文量
57
审稿时长
4-8 weeks
期刊介绍: Astronomische Nachrichten, founded in 1821 by H. C. Schumacher, is the oldest astronomical journal worldwide still being published. Famous astronomical discoveries and important papers on astronomy and astrophysics published in more than 300 volumes of the journal give an outstanding representation of the progress of astronomical research over the last 180 years. Today, Astronomical Notes/ Astronomische Nachrichten publishes articles in the field of observational and theoretical astrophysics and related topics in solar-system and solar physics. Additional, papers on astronomical instrumentation ground-based and space-based as well as papers about numerical astrophysical techniques and supercomputer modelling are covered. Papers can be completed by short video sequences in the electronic version. Astronomical Notes/ Astronomische Nachrichten also publishes special issues of meeting proceedings.
期刊最新文献
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