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The Physics of computing and computing with Physics

2022
Abstract This Chapter shows that any physical system performs some type of computation, with the observers providing meaning (semantics) to such a computation. It then introduces an equivalence principle between physical (semantic) information and computation. Finally, it discusses the general criteria shared by all MemComputing machines.
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The Physics of Quantum Computation

International Journal of Quantum Information, 2014
Quantum computation has emerged in the past decades as a consequence of down-scaling of electronic devices to the mesoscopic regime and of advances in the ability of controlling and measuring microscopic quantum systems. Quantum computation has many interdisciplinary aspects, ranging from physics and chemistry to mathematics and computer science.
FALCI, Giuseppe, PALADINO, ELISABETTA
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Computational physics with PetaFlops computers

Computer Physics Communications, 2009
Abstract Driven by technology, Scientific Computing is rapidly entering the PetaFlops era. The Julich Supercomputing Centre (JSC), one of three German national supercomputing centres, is focusing on the IBM Blue Gene architecture to provide computer resources of this class to its users, the majority of whom are computational physicists.
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Physical computation

Concurrency: Practice and Experience, 1991
AbstractPhysical computation embraces a variety of physical analogies used to tackle non‐traditional problems. We describe Monte Carlo and deterministic methods, including simulated annealing and neural networks. Applications include economic change in Eastern Europe, the travelling salesman problem, vehicle navigation, track finding, and parallel ...
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Computational physics: a perspective

Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2002
Computing comprises three distinct strands: hardware, software and the ways they are used in real or imagined worlds. Its use in research is more than writing or running code. Having something significant to compute and deploying judgement in what is attempted and achieved are especially challenging. In science or engineering, one must define a central
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Computations in fusion Physics

Applied Mathematics and Computation, 1986
The modern approach to nuclear fusion uses inertial confinement by a high-power laser beam, and the computer codes used to simulate the plasma behaviour now contain a lot of physics. Nonlinear interaction of a laser with a turbulent plasma is a major topic of experimental and numerical study. Simulation can be on either the particle or the hydrodynamic
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Simulating physics with computers

International Journal of Theoretical Physics, 1982
This chapter describes the possibility of simulating physics in the classical approximation, a thing which is usually described by local differential equations. But the physical world is quantum mechanical, and therefore the proper problem is the simulation of quantum physics. A computer which will give the same probabilities as the quantum system does.
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Physical computing in computer science education

Proceedings of the tenth annual conference on International computing education research, 2014
Physical computing covers the design and realization of interactive objects and installations and allows students to develop concrete, tangible products of the real world, which arise from the learners' imagination. This can be used in computer science education to provide students with interesting and motivating access to the different topic areas of ...
Mareen Przybylla, Ralf Romeike
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The physical basis of computability

Computing in Science & Engineering, 2002
Simulations work in practice because they exploit higher-level organizing principles in nature. Good code writing requires faithfulness to these principles and the discipline not to exceed their limits of validity. An important exception is the use of simulation to search for new kinds of emergence.
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Physical limitations of a computer

ACM SIGARCH Computer Architecture News, 1993
This article introduces the physical limitations of a computer and describes limiting architectural impact of the laws of physics on computer hardware design and shows how imaginative application of skills of a computer architect and artistic management of the circuitry may override some of these limitations.
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