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Topology change and emergent scale symmetry in compact star matter via gravitational wave detection

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Abstract

Topological structure has been extensively studied and confirmed in highly correlated condensed matter physics. We explore the gravitational waves emitted from binary neutron star mergers using the pseudoconformal model for dense nuclear matter for compact stars. This model considers the topology change and the possible emergent scale symmetry and satisfies all the constraints from astrophysics. We find that the location of the topology change affects gravitational waves dramatically owing to its effect on the equation of state. In addition, the effect of this location on the waveforms of the gravitational waves is within the ability of the on-going and up-coming facilities for detecting gravitational waves, thus suggesting a possible way to measure the topology structure in nuclear physics.

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Author information

Authors and Affiliations

  1. Center for Theoretical Physics and College of Physics, Jilin University, Changchun, 130012, China

    WenCong Yang

  2. School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, China

    YongLiang Ma & YueLiang Wu

  3. International Center for Theoretical Physics Asia-Pacific (ICTP-AP) (Beijing/Hangzhou), University of Chinese Academy of Sciences, Beijing, 100190, China

    YongLiang Ma & YueLiang Wu

  4. Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing, 100190, China

    YueLiang Wu

  5. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China

    YueLiang Wu

Authors
  1. WenCong Yang
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  2. YongLiang Ma
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  3. YueLiang Wu
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Corresponding authors

Correspondence to YongLiang Ma or YueLiang Wu.

Additional information

We thank all contributors of Einstein Toolkit and LORENE code and thank Roberto De Pietri and Parma University gravity group for modifying Einstein Toolkit and developing PyCactus code and making them publicly available. We would like to thank Wei-Tou Ni for the valuable discussions we had. The work of YongLiang Ma was supported by the National Natural Science Foundation of China (Grant Nos. 11875147, and 11475071) and the Intensive Study of Future Space Science Missions of the Strategic Priority Program on Space Science. YueLiang Wu is supported by the National Natural Science Foundation of China (Grant Nos. 11851302, 11851303, 11690022, and 11747601), the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB23030100), and the CAS Center for Excellence in Particle Physics (CCEPP.

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Yang, W., Ma, Y. & Wu, Y. Topology change and emergent scale symmetry in compact star matter via gravitational wave detection. Sci. China Phys. Mech. Astron. 64, 252011 (2021). https://doi.org/10.1007/s11433-020-1662-5

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  • DOI: https://doi.org/10.1007/s11433-020-1662-5

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