BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Discrete informational models - Fredkin\, E (Carnegie Mellon)
DTSTART:20090327T113000Z
DTEND:20090327T123000Z
UID:TALK17560@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:We can easily create simple computational processes\, loosely 
 based on the mathematics of physical systems.  In one case we model the te
 mporal evolution of simple discrete second order informational processes w
 here we\nhave imposed constraints peculiar to reversible computation.  By 
 focusing on systems that share properties with simple physical models we h
 ave found a class of such discrete computations that exhibit exact conserv
 ation laws despite the absence of continuous symmetries.  In particular we
  have made a surprising observation about the calculation of probabilities
  from amplitudes that appears to yield a new insight into the nature of th
 e\nquantum mechanical description of certain physical phenomena.  Another 
 simple discrete informational model\, the infoton particle\, clearly viola
 tes local conservation laws while\, nevertheless\, operationally modeling 
 the\nprocess of General Relativity.\n
LOCATION:Seminar Room 1 Newton Institute
END:VEVENT
END:VCALENDAR