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How Entanglement Could Be Deterministic

2009-08-26 in News by XiXiDu | No comments

A Nobel prize-winning physicist has developed a model of the universe as a cellular automaton that allows entanglement to be deterministic.

The universe is a cellular automaton in which reality is simply the read out of a giant, fantastically complex computing machine. That’s the conclusion of the Nobel Prize winning physicist Gerard ‘t Hooft who says this also means that quantum mechanics is a deterministic theory.

The key new feature of this deterministic model is that it specifically allows for the quantum phenomenon of entanglement.

The real question is whether ‘t Hooft’s can make any predictions that would allow other scientists to put is model to the test.

Link: technologyreview.com/blog/arxiv/ / arxiv.org/abs/0908.3408

More:
en.wikipedia.org/wiki/Cellular_automaton

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A big idea: Grid computing, the new commodity

2009-08-24 in News by XiXiDu | No comments

European researchers have created a platform for trading computing resources that allows the selling and buying of standardised computing resources. In the process, they could make computing a utility like electricity.

The EU-funded GridEcon project has created a commodity market platform that enables users to bid on available computing capacity, or put out a tender for a specific computing time slot.

It is true that organisations can already rent ‘cloud’ computing capacity from companies like Amazon, HP and others, but they generally only offer their spare capacity.

The beauty of GridEcon’s platform is that it is open – users can buy and sell computing capacity on their own terms. And buyers can also be sellers. If a company has a large computer park it can offer its spare capacity, but if it has a temporary need for much greater capacity it can bid for it on the marketplace.

Link: cordis.europa.eu/ictresults/

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Pi calculated to a record 2.5 trillion decimals

2009-08-18 in News by XiXiDu | No comments

Led by University of Tsukuba professor Daisuke Takahashi, the research team performed the calculation using a massive parallel processing (MPP) supercomputer called the T2K Tsukuba System, which consists of 640 high-performance computers clustered together to achieve processing speeds of 95 teraflops (95 trillion floating-point operations per second). The supercomputer calculated pi to 2,576,980,377,524 decimal places in 73 hours 36 minutes.

Pi

Pi

By comparison, it took the previous record holders about 600 hours to perform their calculation (over 8 times longer than it took the T2K Tsukuba System).

Link: pinktentacle.com

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Tiny device is first complete ‘quantum computer’ – physicsworld.com

2009-08-14 in News by XiXiDu | No comments

Researchers in the US claim to have demonstrated the first small-scale device to perform all the functions required in large-scale ion-based quantum processing. Although the individual stages or groups of stages in quantum computing have been demonstrated previously, this new device is said to perform a complete set of quantum logic operations without significant amounts of information being lost in transit. As a result, the device represents an important step in the quest for a practical quantum computer, say the researchers based at the US National Institute of Standards and Technology (NIST) in Boulder, Colorado.

Link: physicsworld.com

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