Sunday, October 29, 2006

Griffiths Consistent Histories

'Griffiths' consistent history approach was introduced in 1984 to create coherent narratives from quantum information. A Griffiths' history is constructed from a succession of more or less random quantum measurements taken at different moments. Each measurements defines a specific physical mass at a precise moment with reference to a specific set of values. As an example, in a time t1 an electron moves at a certain point in space. At a time t2 it is situated at a certain point in space. At a time t3, it has a certain spin value. From this collection of measurements it is possible to construct a history which is logically consistent. It cannot be said to be true; simply that it can be sustained without contradiction. Under a given set of experimental conditions, a finite number of all possible histories can be recreated using Griffiths' method, these are called Griffiths Consistent Histories. In these, the world behaves as though composed of separate objects each having fixed, intrinsic proprieties. However, the number of consistent histories that can be created from a single set of data is generally greater than one. As a being you are self-aware, and this consciousness allows you to hypothesize that the story you've created from a give set of memories is a consistent history, justified by a consistent narrative voice. As a unique individual having existed for a particular period and been subjected to an ontology of objects and proprieties, you can assert this with absolute certainty and so automatically assume that it is a Griffith's history. You make this hypothesis about real life, rather than the memories of dreams.

Houellebecq, Michel. Atomised. pag. 75. Vintage U.K., 2001.