Physics and Computation 2012

## Swansea University, Swansea, United Kingdom

### Wednesday 29 August - Friday 31 August 2012

#### Welcome to the homepage of the 5th International Workshop on Physics and Computation (PC 2012)

The workshop is an interdisciplinary meeting on the frontiers of Mathematics, Physics, Computer Science, Engineering and Biology. The classical application of mathematics is to model and understand the behaviour of physical systems, complex systems, interacting quantum systems or biological systems. Conversely, we can use our theories and observations of such systems to compute. Analogue computation in the hands of Lord Kelvin, Bush and Hartree is an example of combining mathematical models and physical processes to solve mathematical problems. The domination of digital computing owes much to the mathematical work of Turing and his successors, as exemplified by the Church Turing thesis, and the massive development of computability theory. The proposed new technologies for computation raise all sorts of questions concerning their practicality and limits of their applications, questions that require mathematical analysis. The mathematical theory of computation by means of these new technologies is under developed, and lags way behind the theoretical basis of digital computation.

#### Topics

Topological computationAnalogue computation

Computability theory

Computational physics

Axiomatisation of physics: completeness, decidability, generalisations of the Church Turing thesis

Reaction-diffusion models: including brain dynamics, BZ computers

Quantum computation (digital, analogue) and its applications (biology, mathematics, etc.)

Computability and Complexity of mechanical systems digital physics

Logical foundations of physics

Optical computation and nano computation

Philosophy of physics and computation

Physics and information

Quantum logics and quantum randomness

Relativity: spacetimes, computation, time travel, speedup, wormhole computation

Theory of measurement: axiomatisation, complexity

The meeting will commence in the evening of Tuesday August 28 with registration and a welcome reception. Talks start at

**9am on Wednesday morning**and finish at

**2pm Friday afternoon**.