Off-diagonal mixed state phases based upon a concept of orthogonality adapted to unitary evolution and a proper normalisation condition are introduced. Some particular instances are analysed and parallel transport leading to the off-diagonal mixed state geometric phase is delineated. A complete experimental realisation of the off-diagonal mixed state geometric phases in the qubit case using pol...

(1 - x)(Bi1/2Na1/2)TiO3 - xBaTiO3 has been the most studied Pb-free piezoelectric material in the last decade; however, puzzles still remain about its phase transitions, especially around the important morphotropic phase boundary (MPB). By introducing the strain glass transition concept from the ferroelastic field, it was found that the phase transition from tetragonal (T, P4bm) to rhombohedral...

When an application retrieves serialized objects for which the class has changed, it may have to cope with modifications of the semantics. While there are numerous ways to handle the resulting mismatch at runtime, the developer is typically required to provide some code to reestablish the intended semantics of the new class. The present article shows how to instruct an IDE with class version in...

In the eld of arti cial evolution creating methods to evolve neural networks is an important goal. But how to encode the structure and properties of the neural network in the genome is still a problem. If one overloads the genome with detailed information for a network the evolutionary time increases prohibitively. If the genome is too simple, only simple problems can be solved. As Nature has f...

Mctastable systems pose significant problems in both analysis and simulation. We discuss here the evolution of microstructure in a shape-memory alloy where energetic contributions from disparate scales play determining roles. This is a challenge for modelling since the finest length scales cannot be 'seen* at macroscopic level. We then provide a mechanism for kinetics that gives a different not...

1. Current situation and state of the art. As surveys [RRD04a, SMR08] and books [RW12] show, flexibility and evolution in PAIS cover several dimensions ranging from design time flexibility (by underspecification or based on declarative models), runtime flexibility where we can distinguish between “foreseen” exceptions (to be dealt with by compensation or rollback) and “unforeseen” exceptions (d...

We analyze users’ behavior in Tianya online forum, and find great fluctuations exist in the amount of agents that participate in interactions. Therefore we present a model that includes the coevolving dynamics of network and opinions. New nodes are added to network gradually, promoting the total size of the system. On the other side, old nodes which feel tired of the topic may withdraw interact...

Topological defects can be formed during inflation by phase transitions as well as by quantum nucleation. We study the effect of the expansion of the Universe on the internal structure of the defects. We look for stationary solutions to the field equations, i.e. solutions that depend only on the proper distance from the defect core. In the case of very thin defects, whose core dimensions are mu...

We present a split-beam neutron interferometric experiment to test the non-cyclic geometric phase tied to the spatial evolution of the system: the subjacent two-dimensional Hilbert space is spanned by the two possible paths in the interferometer and the evolution of the state is controlled by phase shifters and absorbers. A related experiment was reported previously by some of the authors to ve...