David Rideout

Research Interests

My research is directed toward the ultimate goal of constructing a quantum theory of gravity. On one hand this involves an attempt to reformulate quantum theory in terms of 'quantum measure theory', which seeks to express quantum theory as a generalization of a classical stochastic process. On the other hand this involves expressing gravity in terms of a 'causal set', which is a fundamentally discrete substratum for spacetime, endowed with a partial ordering which encodes causality.

Some of my research makes use of a number of recent technologies from high performance computing, such as computational frameworks and automatic parallelism.

Positions Held

• 2010 Joint Postdoctoral Fellow, Institute for Quantum Computing
• 2005 - 2007 Marie Curie Experienced Researcher, Imperial College London
• 2003 - 2005 Postdoctoral Fellow, Hamilton College

Recent Publications

• G. Allen, T. Goodale, F. Loffler, D. Rideout, E. Schnetter, and E. Seidel, "Component Specification in the Cactus Framework: The Cactus Configuration Language", to appear in the 2010 Workshop on Component-Based High Performance Computing (CBHPC 2010)
• M. Ahmed and D. Rideout, "Indications of deSitter Spacetime from Classical Sequential Growth Dynamics of Causal Sets", Phys.Rev.D 81 083528, arxiv: 0909.4771
• Johannes Brunnemann and David Rideout, "Oriented Matroids -- Combinatorial Structures Underlying Loop Quantum Gravity", to appear in Class.Quant.Grav., arxiv: 1003.2348
• D. Rideout and P. Wallden, "Emergence of spatial structure from causal sets", J.Phys.Conf.Ser. 174 012017, arxiv: 0905.0017
• Seth Major, David Rideout, Sumati Surya, "Stable Homology as Indicator of Manifoldlikeness in Causal Set Theory", Class.Quant.Grav. 26 175008, arxiv: 0902.0434
• David Rideout and Petros Wallden, Spacelike distance from discrete causal order, Class.Quant.Grav.26 155013, arxiv: 0810.1768
• Song He and David Rideout, "A Causal Set Black Hole", Class.Quant.Grav.26 125015, arxiv: 0811.4235v1
• C. Eskilsson, Y. El-Khamra, D. Rideout, G. Allen, Q.J. Chen, and M. Tyagi, "A Parallel High-Order Discontinuous Galerkin Shallow Water Model", LNCS 5544, p. 63.
• David Rideout and Petros Wallden, "Emergence of spatial structure from causal sets", J.Phys.Conf.Ser. 174 012017, arxiv: 0905.0017
• Johannes Brunnemann and David Rideout, "Properties of the Volume Operator in Loop Quantum Gravity II: Detailed Presentation", Class.Quant.Grav. 25 065002, arxiv: 0706.0382
• Johannes Brunnemann and David Rideout, "Properties of the Volume Operator in Loop Quantum Gravity I: Results", Class.Quant.Grav. 25 065001, arxiv: 0706.0469
• M. Barnett, D. Rideout, and F. Dowker, "Popescu-Rohrlich Boxes in Quantum Measure Theory", J. Phys. A: Math. Theor. 40 No 26 (2007) 7255--7264, arxiv: quant-ph/0605253
• D. Craig, F. Dowker, J. Henson, S. Major, D. Rideout, and R. Sorkin, "A Bell Inequality Analog in Quantum Measure Theory", J. Phys. A: Math. Theor. 40 No 3 501-523 arxiv: quant-ph/0605008
• David Rideout and Petros Wallden, "Emergent Continuum Spacetime from a Random, Discrete, Partial Order", J.Phys.Conf.Ser. 89:012045 arxiv: 0811.1178

Seminars

• Indications of de Sitter Spacetime from a Discrete Causal Dynamics, GR 19, Mexico City
• Oriented Matroids as Combinatorial Structures Underlying Loop Quantum Gravity, Canadian Mathematical Society Summer Meeting, Fredericton, NB
• Insights from Numerical Quantum Gravity, Relativity Seminar, Louisiana State University
• Indications of de Sitter Spacetime from a Discrete Causal Dynamics, Applied Math Seminar, University of Otago, New Zealand
• Matter in Sequential Growth Models, Causal Sets at DIAS II, Dublin
• Hints of deSitter Spacetime from Transitive Percolation, Causal Sets at DIAS II, Dublin
• Indications of de Sitter Spacetime from Causal Set Dynamics, Numerical approaches to AdS/CFT, large N and gravity, London, UK
• The Cactus Framework for High Performance Computations in Physics, Notre Dame Center for Research Computing Colloquium, South Bend, Indiana, USA
• Emergence of de Sitter Spacetime from Causal Set Dynamics, Emergent Gravity IV, Vancouver, BC
• Towards a Generic HPC Framework for Coastal Modeling, ICCS 2009, Baton Rouge, LA
• Spacetime geometry from fundamental discreteness, GRAVTUM II Workshop, Amorgos, Greece
• Emergence of spacetime structure from a discrete causal order, DICE2008, Castiglioncello, Italy
• PIRSA:08040025, Popescu-Rohrlich boxes in quantum measure theory, 2008-04-01, Quantum Foundations
• Recent Progress in Causal Set Kinematics, Current Challenges for Causal Set Quantum Gravity
• PIRSA:04100026, Cactus as a Collaborative Tool for Discrete Quantum Gravity, 2004-10-29, Workshop on Quantum Gravity in the Americas: Status and future directions