Hal M. Haggard

1.1k total citations
31 papers, 569 citations indexed

About

Hal M. Haggard is a scholar working on Astronomy and Astrophysics, Statistical and Nonlinear Physics and Nuclear and High Energy Physics. According to data from OpenAlex, Hal M. Haggard has authored 31 papers receiving a total of 569 indexed citations (citations by other indexed papers that have themselves been cited), including 23 papers in Astronomy and Astrophysics, 23 papers in Statistical and Nonlinear Physics and 15 papers in Nuclear and High Energy Physics. Recurrent topics in Hal M. Haggard's work include Cosmology and Gravitation Theories (18 papers), Noncommutative and Quantum Gravity Theories (17 papers) and Black Holes and Theoretical Physics (14 papers). Hal M. Haggard is often cited by papers focused on Cosmology and Gravitation Theories (18 papers), Noncommutative and Quantum Gravity Theories (17 papers) and Black Holes and Theoretical Physics (14 papers). Hal M. Haggard collaborates with scholars based in United States, France and Canada. Hal M. Haggard's co-authors include Carlo Rovelli, Eugenio Bianchi, Aldo Riello, Nicolas B. Cowan, Muxin Han, Wojciech Kamiński, Bianca Dittrich, Robert G. Littlejohn, Goffredo Chirco and Nadir Jeevanjee and has published in prestigious journals such as Physical Review Letters, Nuclear Physics B and Monthly Notices of the Royal Astronomical Society.

In The Last Decade

Hal M. Haggard

30 papers receiving 553 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Hal M. Haggard United States 14 413 407 360 139 24 31 569
Donald Salisbury United States 9 321 0.8× 490 1.2× 330 0.9× 129 0.9× 2 0.1× 35 612
Julien Grain France 20 870 2.1× 866 2.1× 600 1.7× 92 0.7× 6 0.3× 36 955
Jason Pollack United States 10 303 0.7× 315 0.8× 148 0.4× 153 1.1× 19 0.8× 27 459
Charles Hellaby South Africa 20 706 1.7× 1.1k 2.7× 206 0.6× 69 0.5× 36 1.5× 47 1.1k
Aurélien Barrau France 26 1.7k 4.0× 1.5k 3.8× 1.0k 2.8× 170 1.2× 18 0.8× 93 1.8k
Rituparno Goswami South Africa 21 1.3k 3.2× 1.5k 3.6× 222 0.6× 97 0.7× 4 0.2× 76 1.5k
Spiros Cotsakis Greece 15 826 2.0× 880 2.2× 204 0.6× 30 0.2× 8 0.3× 70 956
Pietro Donà France 14 583 1.4× 366 0.9× 466 1.3× 154 1.1× 27 700
David Brizuela Spain 15 592 1.4× 637 1.6× 379 1.1× 98 0.7× 43 769
Francesca Vidotto France 14 665 1.6× 613 1.5× 582 1.6× 146 1.1× 21 785

Countries citing papers authored by Hal M. Haggard

Since Specialization
Citations

This map shows the geographic impact of Hal M. Haggard's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Hal M. Haggard with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hal M. Haggard more than expected).

Fields of papers citing papers by Hal M. Haggard

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hal M. Haggard. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Hal M. Haggard. The network helps show where Hal M. Haggard may publish in the future.

Co-authorship network of co-authors of Hal M. Haggard

This figure shows the co-authorship network connecting the top 25 collaborators of Hal M. Haggard. A scholar is included among the top collaborators of Hal M. Haggard based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Hal M. Haggard. Hal M. Haggard is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Donà, Pietro, Hal M. Haggard, Carlo Rovelli, & Francesca Vidotto. (2024). Tunneling of quantum geometries in spinfoams. Physical review. D. 109(10). 1 indexed citations
2.
Dittrich, Bianca, et al.. (2020). Effective Spin Foam Models for Four-Dimensional Quantum Gravity. Physical Review Letters. 125(23). 231301–231301. 45 indexed citations
3.
Haggard, Hal M.. (2018). Gibbsing spacetime: a group field theory approach to equilibrium in quantum gravity. New Journal of Physics. 20(7). 71001–71001. 1 indexed citations
4.
Bianchi, Eugenio, Anuradha Gupta, Hal M. Haggard, & B. S. Sathyaprakash. (2018). Quantum gravity and black hole spin in gravitational wave observations: a test of the Bekenstein-Hawking entropy. arXiv (Cornell University). 3 indexed citations
5.
Haggard, Hal M. & Nicolas B. Cowan. (2018). Analytic reflected light curves for exoplanets. Monthly Notices of the Royal Astronomical Society. 478(1). 371–385. 7 indexed citations
6.
Bianchi, Eugenio & Hal M. Haggard. (2018). Spin fluctuations and black hole singularities: the onset of quantum gravity is spacelike. New Journal of Physics. 20(10). 103028–103028. 1 indexed citations
7.
Schwartz, Joel, et al.. (2016). Inferring planetary obliquity using rotational and orbital photometry. Monthly Notices of the Royal Astronomical Society. 457(1). 926–938. 19 indexed citations
8.
Haggard, Hal M. & Carlo Rovelli. (2016). Quantum gravity effects around Sagittarius A*. International Journal of Modern Physics D. 25(12). 1644021–1644021. 18 indexed citations
9.
Haggard, Hal M., Muxin Han, Wojciech Kamiński, & Aldo Riello. (2015). SL(2,C) Chern–Simons theory, a non-planar graph operator, and 4D quantum gravity with a cosmological constant: Semiclassical geometry. Nuclear Physics B. 900. 1–79. 44 indexed citations
10.
Haggard, Hal M., Muxin Han, Wojciech Kamiński, & Aldo Riello. (2015). SL(2,C) Chern-Simons Theory and Quantum Gravity with a Cosmological Constant. Bulletin of the American Physical Society. 2015. 1 indexed citations
11.
Haggard, Hal M., Muxin Han, Wojciech Kamiński, & Aldo Riello. (2015). Four-dimensional quantum gravity with a cosmological constant from three-dimensional holomorphic blocks. Physics Letters B. 752. 258–262. 25 indexed citations
12.
Haggard, Hal M. & Carlo Rovelli. (2014). Black hole fireworks: quantum-gravity effects outside the horizon spark black to white hole tunneling. arXiv (Cornell University). 12 indexed citations
13.
Chirco, Goffredo, Hal M. Haggard, Aldo Riello, & Carlo Rovelli. (2014). Spacetime thermodynamics without hidden degrees of freedom. Physical review. D. Particles, fields, gravitation, and cosmology. 90(4). 23 indexed citations
14.
Haggard, Hal M. & Carlo Rovelli. (2013). Death and resurrection of the zeroth principle of thermodynamics. Physical review. D. Particles, fields, gravitation, and cosmology. 87(8). 12 indexed citations
15.
Haggard, Hal M. & Carlo Rovelli. (2013). DEATH AND RESURRECTION OF THE ZEROTH PRINCIPLE OF THERMODYNAMICS. International Journal of Modern Physics D. 22(12). 1342007–1342007. 5 indexed citations
16.
Haggard, Hal M., Carlo Rovelli, Wolfgang Wieland, & Francesca Vidotto. (2013). Spin connection of twisted geometry. Physical review. D. Particles, fields, gravitation, and cosmology. 87(2). 14 indexed citations
17.
Aquilanti, Vincenz̊o, et al.. (2012). Semiclassical mechanics of the Wigner 6j-symbol. Journal of Physics A Mathematical and Theoretical. 45(6). 65209–65209. 26 indexed citations
18.
Bianchi, Eugenio & Hal M. Haggard. (2012). Bohr-Sommerfeld quantization of space. Physical review. D. Particles, fields, gravitation, and cosmology. 86(12). 20 indexed citations
19.
Haggard, Hal M.. (2011). Asymptotic Analysis of Spin Networks with Applications to Quantum Gravity. eScholarship (California Digital Library). 3 indexed citations
20.
Bianchi, Eugenio & Hal M. Haggard. (2011). Discreteness of the Volume of Space from Bohr-Sommerfeld Quantization. Physical Review Letters. 107(1). 11301–11301. 39 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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