Dr. Sean Gryb
Qualifications: PhD in Physics, PhD candidate in Philosophy
My research involves epistemological issues associated with space, time and scale. In particular, I am interested in how these issues can be used to formulate a theory of quantum gravity. I helped develop the theory of "Shape Dynamics" — a fundamentally scale-free approach to quantum gravity — and have developed a "Relational Quantization" procedure in a new book with the philosopher Karim Thébault to address the Problem of Time in canonical quantum gravity. My current work is focused on the use of probability in cosmology and, in particular, in developing a new approach to explaining the arrow of time
2023
Gryb,
S. B. (Accepted/In press). Time regained: Volume
1, Symmetry and Evolution in Classical Mechanics.
Oxford University Press.
2021
Gomes,
H., & Gryb, S. (2021). Angular momentum
without rotation: turbocharging relationalism.
Studies in History and Philosophy of Modern
Physics, 88, 138-155. https://doi.org/10.1016/j.shpsa.2021.05.006
Gryb,
S. (2021). New difficulties for the past
hypothesis. Philosophy of Science,
88(3), 511-532. https://doi.org/10.1086/712879
Gryb,
S., Palacios, P., & Thébault, K. (2021). On
the Universality of Hawking Radiation. British
Journal for the Philosophy of Science, 72(3),
809-837. https://doi.org/10.1093/bjps/axz025
Gryb,
S., & Sloan, D. (2021). When scale is
surplus. Synthese, 199,
14769–14820. https://doi.org/10.1007/s11229-021-03443-7
2018
Gryb,
S., & Thebault, K. P. Y. (2019). Bouncing unitary
cosmology II. Mini-superspace phenomenology.
Classical and Quantum Gravity,
36(3), Article 035010. https://doi.org/10.1088/1361-6382/aaf837
Gryb,
S., & Thebault, K. P. Y. (2019). Bouncing unitary
cosmology I. Mini-superspace general solution.
Classical and Quantum Gravity,
36(3), Article 035009. https://doi.org/10.1088/1361-6382/aaf823
Dardashti,
R., Dawid, R., Gryb, S., & Thébault, K.
(2018). On the Empirical Consequences of the AdS/CFT
Duality. In N. Huggett, K. Matsubara, & C. Wüthrich
(Eds.), Beyond Spacetime: The Foundations of Quantum
Gravity (pp. 284-303). Cambridge University Press. https://doi.org/10.1017/9781108655705.016
Gryb,
S., & Thébault, K. P. Y. (2018).
Superpositions of the cosmological constant allow for
singularity resolution and unitary evolution in quantum
cosmology. Physics Letters B,
784, 324-329. https://doi.org/10.1016/j.physletb.2018.08.013
2016
Gryb,
S., & Thebault, K. P. Y. (2016). Regarding the
‘Hole Argument’ and the ‘Problem of
Time’. Philosophy of Science,
83(4), 563-584. https://doi.org/10.1086/687262
Evans,
P. W., Gryb, S., & Thébault, K. P. Y. (2016).
$Ψ$-Epistemic Quantum Cosmology?
Studies in History and Philosophy of Modern
Physics, 56, 1-12. https://doi.org/10.1016/j.shpsb.2016.10.005
2015
Gryb,
S., & Ngui , M. (2015). Is Spacetime
Countable? In A. Aguirre, B. Foster, & Z. Merali (Eds.),
It From Bit or Bit From It? : On Physics and Information
(pp. 153–168). Springer. https://doi.org/10.1007/978-3-319-12946-4_14
Gryb,
S. (2015). Observing Shape in Spacetime.
General Relativity and Gravitation,
47(37), Article 37. https://doi.org/10.1007/s10714-015-1875-7
Gryb,
S., & Thebault, K. (2015). Schrodinger Evolution
for the Universe: Reparametrization. Classical and
Quantum Gravity, 33(6). https://doi.org/10.1088/0264-9381/33/6/065004
2014
Gryb,
S., & Thebault, K. (2014). Time Remains.
British Journal for the Philosophy of
Science, 67(3). https://doi.org/10.1093/bjps/axv009
2013
Gryb,
S., & Mercati, F. (2013). 2+1 gravity on the
conformal sphere. Physical Review D,
87, Article 064006. https://doi.org/10.1103/PhysRevD.87.064006
Gryb,
S., & Mercati, F. (2013). Right About Time?
In A. Aguirre, B. Foster, & Z. Merali (Eds.), Questioning
the Foundations of Physics: Which of Our Fundamental Assumptions
Are Wrong? (pp. 87–102). Springer. https://doi.org/10.1007/978-3-319-13045-3_6
Gryb,
S., & Thebault, K. (2013). Symmetry and Evolution
in Quantum Gravity. Foundations of
Physics, 44, 305–348 . https://doi.org/10.1007/s10701-014-9789-x
Gomes,
H., Gryb, S., Koslowski, T., & Mercati, F. (2013).
The gravity/CFT correspondence. The European
Physical Journal C, 73, Article 2275. https://doi.org/10.1140/epjc/s10052-013-2275-3
2012
Gryb,
S. (2012). Shape dynamics and Mach's principles:
Gravity from conformal geometrodynamics. [Thesis fully
external, University of Waterloo].
Gryb,
S., & Thebault, K. (2012). The Role of Time in
Relational Quantum Theories. Foundations of
Physics, 42. https://doi.org/10.1007/s10701-012-9665-5
2010
Gryb,
S. B. (2010). A Definition of Background
Independence. Classical and Quantum
Gravity, 27(21), Article 215018. https://doi.org/10.1088/0264-9381/27/21/215018
Gomes,
H., Gryb, S., & Koslowski, T. (2010).
Einstein gravity as a 3D conformally invariant theory.
Classical and Quantum Gravity,
28(4). https://doi.org/10.1088/0264-9381/28/4/045005
Gryb,
S. B. (2010). Jacobi's Principle and the Disappearance
of Time. Physical Review D,
81, Article 044035. https://doi.org/10.1103/PhysRevD.81.044035
2009
Gryb,
S. B. (2009). Implementing Mach's Principle Using
Gauge Theory. Phys.Rev.D, 80.
https://doi.org/10.1103/PhysRevD.80.024018
Gryb,
S. B. (2009). Quantum Machian Time in Toy Models of
Gravity. Classical and Quantum
Gravity, 26(8). https://doi.org/10.1088/0264-9381/26/8/085015
| Last modified: | 27 May 2024 3.48 p.m. |