Nonexistence of quantum black and white hole horizons in an improved dynamic approach  

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作  者:Wen-Cong Gan Xiao-Mei Kuang Zhen-Hao Yang Yungui Gong Anzhong Wang Bin Wang 

机构地区:[1]College of Physics and Communication Electronics,Jiangxi Normal University,Nanchang 330022,China [2]GCAP-CASPER,Physics Department,Baylor University,Waco 76798-7316,USA [3]Institute for Theoretical Physics&Cosmology,Zhejiang University of Technology,Hangzhou 310023,China [4]United Center for Gravitational Wave Physics(UCGWP),Zhejiang University of Technology,Hangzhou 310023,China [5]Center for Gravitation and Cosmology,College of Physical Science and Technology,Yangzhou University,Yangzhou 225009,China [6]Department of Physics,School of Physical Science and Technology,Ningbo University,Ningbo 315211,China [7]School of Aeronautics and Astronautics,Shanghai Jiao Tong University,Shanghai 200240,China

出  处:《Science China(Physics,Mechanics & Astronomy)》2024年第8期56-73,共18页中国科学:物理学、力学、天文学(英文版)

基  金:supported by Baylor University through the Baylor Physics graduate program;supported by the Initial Research Foundation of Jiangxi Normal University(Grant No.12022827);partially supported by the National Key Research and Development Program of China(Grant No.2020YFC2201504);the National Natural Science Foundation of China(Grant Nos.11975203,12075202,and 11875136);the Natural Science Foundation of Jiangsu Province(Grant No.BK20211601);partially supported by the National Science Foundation(Grant No.PHY2308845)。

摘  要:In this paper,we study the quantum geometric effects near the locations where classical black hole horizons used to appear in Einstein's classical theory,within the framework of an improved dynamic approach,in which the internal region of a black hole is modeled by the Kantowski-Sachs(KS)spacetime and the two polymerization parameters are functions of the phase space variables.Our detailed analysis shows that the effects are so strong that black and white hole horizons of the effective quantum theory do not exist at all and instead are replaced by transition surfaces,across which the metric coefficients and their inverses are smooth and remain finite,as are the corresponding curvatures,including the Kretschmann scalar.These surfaces always separate trapped regions from anti-trapped regions.The number of such surfaces is infinite,so the corresponding KS spacetimes become geodesically complete,and no black and white hole-like structures exist in this scheme.

关 键 词:canonical quantization loop quantum gravity quantum aspects of black holes 

分 类 号:P145.8[天文地球—天体物理] P145.9[天文地球—天文学]

 

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