Bound on generalized uncertainty principle parameter from nuclear matter and slow rotating neutron stars

IF 2.8 4区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS
M. H. Al Ghifari, H. S. Ramadhan, H. Alatas, A. Sulaksono
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Abstract

Constraining the Generalized Uncertainty Principle (GUP) parameter is crucial for probing potential quantum gravity effects in regimes that extend beyond the Planck scale. In this study, we place bounds on the \(\beta \) parameter, associated with the widely studied quadratic GUP model, using existing experimental data from nuclear matter and results from chiral effective field theory (\(\chi \)EFT) calculations. We also assess the compatibility of neutron star (NS) matter prediction based on those extracted from NS observations. The quadratic GUP model shares the same dispersion relation as a specific version of Double Special Relativity (DSR), establishing a connection between one of the rainbow gravity (RG) parameters and the quadratic GUP parameter. We then explore NS properties within the RG framework, defining \(X = E/E_p\) alongside \(\beta \). Therefore, we calculate the predictions for slow-rotating NS using the RG effective metric and compare these results with existing observational data. From our analysis, we obtain an upper bound of \(\beta = 1.5 \times 10^{-7}\) based on nuclear matter and neutron star matter data. We also find a non-zero lower bound of \(\beta = -1.5 \times 10^{-7}\). When using \(\beta = 1.5 \times 10^{-7}\) within the RG framework, the maximum mass prediction is lower than the constraints derived from the NICER data. In fact, rather than increasing, the parameter X further decreases the maximum mass prediction. However, when we set \(\beta = -1.5 \times 10^{-7}\) and \(X = 10^{-38.5}\), the maximum neutron star mass remains consistent with NICER and other astrophysical constraints. Our results show that slowly rotating NS favor negative \(\beta \) within this framework.

从核物质和慢旋转中子星的广义不确定原理参数的约束
约束广义不确定性原理(GUP)参数对于探测超越普朗克尺度的潜在量子引力效应至关重要。在这项研究中,我们利用现有的核物质实验数据和手性有效场理论(χ \chi EFT)计算结果,对β \beta参数设置了边界,并与广泛研究的二次GUP模型相关联。我们还评估了基于中子星观测数据提取的中子星物质预测的兼容性。二次型GUP模型与特定版本的双狭义相对论(DSR)具有相同的色散关系,在彩虹引力(RG)参数之一与二次型GUP参数之间建立了联系。然后,我们在RG框架内探索NS属性,定义X=E/EpX =E/ E_p和β \beta。因此,我们使用RG有效度量来计算慢旋转NS的预测,并将这些结果与现有观测数据进行比较。根据核物质和中子星物质的数据,我们得到了β=1.5×10−7 \beta =1.5 \times 10^{-7}的上界。我们还发现了β= - 1.5×10−7 \beta = -1.5 \times 10^{-7}的非零下界。当在RG框架内使用β=1.5×10−7 \beta =1.5 \times 10^{-7}时,最大质量预测低于来自NICER数据的约束。事实上,参数X非但没有增加,反而进一步降低了最大质量预测。然而,当我们设置β=−1.5×10−7 \beta = -1.5 \times 10^{-7}和X=10−38.5X =10 ^{-38.5}时,最大中子星质量仍然符合NICER和其他天体物理约束。我们的研究结果表明,在这个框架内,缓慢旋转的NS有利于负β \beta。
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来源期刊
General Relativity and Gravitation
General Relativity and Gravitation 物理-天文与天体物理
CiteScore
4.60
自引率
3.60%
发文量
136
审稿时长
3 months
期刊介绍: General Relativity and Gravitation is a journal devoted to all aspects of modern gravitational science, and published under the auspices of the International Society on General Relativity and Gravitation. It welcomes in particular original articles on the following topics of current research: Analytical general relativity, including its interface with geometrical analysis Numerical relativity Theoretical and observational cosmology Relativistic astrophysics Gravitational waves: data analysis, astrophysical sources and detector science Extensions of general relativity Supergravity Gravitational aspects of string theory and its extensions Quantum gravity: canonical approaches, in particular loop quantum gravity, and path integral approaches, in particular spin foams, Regge calculus and dynamical triangulations Quantum field theory in curved spacetime Non-commutative geometry and gravitation Experimental gravity, in particular tests of general relativity The journal publishes articles on all theoretical and experimental aspects of modern general relativity and gravitation, as well as book reviews and historical articles of special interest.
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