arXiv: General Relativity and Quantum Cosmology最新文献_第10页

Analytic solutions of the Teukolsky equation for massless perturbations of any spin in de Sitter background 德西特背景下任意自旋无质量微扰的Teukolsky方程解析解

arXiv: General Relativity and Quantum Cosmology Pub Date : 2020-10-08 DOI: 10.1063/5.0015848

Yao-Z Zhang

引用次数: 1

Identifying when precession can be measured in gravitational waveforms 确定何时可以用重力波形测量进动

arXiv: General Relativity and Quantum Cosmology Pub Date : 2020-10-08 DOI: 10.1103/PhysRevD.103.124023

R. Green, C. Hoy, S. Fairhurst, M. Hannam, F. Pannarale, Cory M. Thomas

{"title":"Identifying when precession can be measured in gravitational waveforms","authors":"R. Green, C. Hoy, S. Fairhurst, M. Hannam, F. Pannarale, Cory M. Thomas","doi":"10.1103/PhysRevD.103.124023","DOIUrl":"https://doi.org/10.1103/PhysRevD.103.124023","url":null,"abstract":"In binary-black-hole systems where the black-hole spins are misaligned with the orbital angular momentum, precession effects leave characteristic modulations in the emitted gravitational waveform. Here, we investigate where in the parameter space we will be able to accurately identify precession, for likely observations over coming LIGO-Virgo-KAGRA observing runs. Despite the large number of parameters that characterise a precessing binary, we perform a large scale systematic study to identify the impact of each source parameter on the measurement of precession. We simulate a fiducial binary at moderate mass-ratio, signal-to-noise ratio (SNR), and spins, such that precession will be clearly identifiable, then successively vary each parameter while holding the remaining parameters fixed. As expected, evidence for precession increases with signal-to noise-ratio (SNR), higher in-plane spins, more unequal component masses, and higher inclination, but our study provides a quantitative illustration of each of these effects, and informs our intuition on parameter dependencies that have not yet been studied in detail, for example, the effect of varying the relative strength of the two polarisations, the total mass, and the aligned-spin components. We also measure the \"precession SNR\" $rho_p$, which was introduced in Refs[1,2] to quantify the signal power associated with precession. By comparing $rho_p$ with both Bayes factors and the recovered posterior distributions, we find it is a reliable metric for measurability that accurately predicts when the detected signal contains evidence for precession.","PeriodicalId":8455,"journal":{"name":"arXiv: General Relativity and Quantum Cosmology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86340904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

One-to-one correspondence between entanglement mechanics and black hole thermodynamics 纠缠力学与黑洞热力学的一对一对应关系

arXiv: General Relativity and Quantum Cosmology Pub Date : 2020-10-07 DOI: 10.1103/physrevd.102.125025

S. Chandran, S. Shankaranarayanan

{"title":"One-to-one correspondence between entanglement mechanics and black hole thermodynamics","authors":"S. Chandran, S. Shankaranarayanan","doi":"10.1103/physrevd.102.125025","DOIUrl":"https://doi.org/10.1103/physrevd.102.125025","url":null,"abstract":"We establish a one-to-one mapping between entanglement entropy, energy, and temperature (quantum entanglement mechanics) with black hole entropy, Komar energy, and Hawking temperature, respectively. We show this explicitly for 4-D spherically symmetric asymptotically flat and non-flat space-times with single and multiple horizons. We exploit an inherent scaling symmetry of entanglement entropy and identify scaling transformations that generate an infinite number of systems with the same entanglement entropy, distinguished only by their respective energies and temperatures. We show that this scaling symmetry is present in most well-known systems starting from the two-coupled harmonic oscillator to quantum scalar fields in spherically symmetric space-time. The scaling symmetry allows us to identify the cause of divergence of entanglement entropy to the generation of (near) zero-modes in the systems. We systematically isolate the zero-mode contributions using suitable boundary conditions. We show that the entanglement entropy and energy of quantum scalar field scale differently in space-times with horizons and flat space-time. The relation $E=2TS$, in analogy with the horizon's thermodynamic structure, is also found to be universally satisfied in the entanglement picture. We then show that there exists a one-to-one correspondence leading to the Smarr-formula of black hole thermodynamics for asymptotically flat and non-flat space-times.","PeriodicalId":8455,"journal":{"name":"arXiv: General Relativity and Quantum Cosmology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90968429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

General teleparallel modifications of Schwarzschild geometry 史瓦西几何的一般远平行修正

arXiv: General Relativity and Quantum Cosmology Pub Date : 2020-10-05 DOI: 10.1142/S0219887821400016

S. Bahamonde, C. Pfeifer

引用次数: 11

Compatibility of nonlinear electrodynamics models with Robinson-Trautman geometry 非线性电动力学模型与Robinson-Trautman几何的相容性

arXiv: General Relativity and Quantum Cosmology Pub Date : 2020-10-04 DOI: 10.1103/PHYSREVD.103.064052

T. Tahamtan

引用次数: 4

Gravitational-wave detectors as particle-physics laboratories: Constraining scalar interactions with a coherent inspiral model of boson-star binaries 作为粒子物理实验室的引力波探测器:用玻色子-星双星的相干激励模型约束标量相互作用

arXiv: General Relativity and Quantum Cosmology Pub Date : 2020-10-04 DOI: 10.1103/physrevd.102.083002

Costantino Pacilio, Massimo Vaglio, A. Maselli, P. Pani

引用次数: 12

Quasinormal modes of the generalized Ayón-Beato–García black hole in scalar-tensor-vector gravity 标量-张量-矢量引力中广义Ayón-Beato-García黑洞的拟正规模态

arXiv: General Relativity and Quantum Cosmology Pub Date : 2020-10-04 DOI: 10.1103/physrevd.102.084061

Xin-Chang Cai, Y. Miao

{"title":"Quasinormal modes of the generalized Ayón-Beato–García black hole in scalar-tensor-vector gravity","authors":"Xin-Chang Cai, Y. Miao","doi":"10.1103/physrevd.102.084061","DOIUrl":"https://doi.org/10.1103/physrevd.102.084061","url":null,"abstract":"We obtain the solution of a generalized ABG STVG black hole with the nonlinear tensor field $B_{mu nu }$ in the scalar-tensor-vector gravity. This black hole is endowed with four parameters, the black hole mass $M$, the parameter $alpha$ associated with the STVG theory, and the two parameters $lambda$ and $beta$ that are related to the dipole and quadrupole moments of the nonlinear tensor field, respectively. By analyzing the characteristics of the black hole, we find that the generalized ABG STVG black hole is regular when $lambda geqslant 3$ and $beta geqslant 4$, and we study the effects of the parameters $alpha$, $lambda$ and $beta$ on the black hole horizon. We calculate the quasinormal mode frequencies of the odd parity gravitational perturbation for the generalized ABG STVG black hole by using the 6th order WKB approximation method and simultaneously by the null geodesic method at the eikonal limit. The results show that the increase of the parameters $alpha$ and $lambda$ makes the gravitational waves decay slowly, while the increase of the parameter $beta$ makes the gravitational waves decay fast at first and then slowly. In addition, we verify that the improved correspondence between the real part of quasinormal frequencies at the eikonal limit and the shadow radius is valid for the generalized ABG STVG black hole.","PeriodicalId":8455,"journal":{"name":"arXiv: General Relativity and Quantum Cosmology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74391861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Radiative contribution to classical gravitational scattering at the third order in G 辐射对三阶重力散射的贡献

arXiv: General Relativity and Quantum Cosmology Pub Date : 2020-10-04 DOI: 10.1103/physrevd.102.124008

T. Damour

引用次数: 103

Non-Riemannian cosmology: The role of shear hypermomentum 非黎曼宇宙学:剪切超动量的作用

arXiv: General Relativity and Quantum Cosmology Pub Date : 2020-10-02 DOI: 10.1142/S0219887821501292

Damianos Iosifidis

引用次数: 13

Gravitational spin-orbit and aligned spin1−spin2 couplings through third-subleading post-Newtonian orders 引力在手性和一致spin1−spin2耦合通过third-subleading后牛顿订单

arXiv: General Relativity and Quantum Cosmology Pub Date : 2020-10-02 DOI: 10.1103/physrevd.102.124024

Andrea Antonelli, C. Kavanagh, Mohammed M. Khalil, J. Steinhoff, J. Vines

{"title":"Gravitational spin-orbit and aligned \u0000spin1−spin2\u0000 couplings through third-subleading post-Newtonian orders","authors":"Andrea Antonelli, C. Kavanagh, Mohammed M. Khalil, J. Steinhoff, J. Vines","doi":"10.1103/physrevd.102.124024","DOIUrl":"https://doi.org/10.1103/physrevd.102.124024","url":null,"abstract":"The study of scattering encounters continues to provide new insights into the general relativistic two-body problem. The local-in-time conservative dynamics of an aligned-spin binary, for both unbound and bound orbits, is fully encoded in the gauge-invariant scattering-angle function, which is most naturally expressed in a post-Minkowskian (PM) expansion, and which exhibits a remarkably simple dependence on the masses of the two bodies (in terms of appropriate geometric variables). This dependence links the PM and small-mass-ratio approximations, allowing gravitational self-force results to determine new post-Newtonian (PN) information to all orders in the mass ratio. In this paper, we exploit this interplay between relativistic scattering and self-force theory to obtain the third-subleading (4.5PN) spin-orbit dynamics for generic spins, and the third-subleading (5PN) spin$_1$-spin$_2$ dynamics for aligned spins. We further implement these novel PN results in an effective-one-body framework, and demonstrate the improvement in accuracy by comparing against numerical-relativity simulations.","PeriodicalId":8455,"journal":{"name":"arXiv: General Relativity and Quantum Cosmology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83809404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 27