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SUMMARY:On a Quantum Construction for Classical Space-Times: Palatial Twis
 tor Theory - Roger Penrose (Oxford)
DTSTART:20170307T160000Z
DTEND:20170307T170000Z
UID:TALK68469@talks.cam.ac.uk
CONTACT:Professor Maciej Dunajski
DESCRIPTION:Twistor theory was originally motivated from a desire to bring
  together basic mathematical ingredients of quantum mechanics and relativi
 stic space-time structure. Many results were achieved\, including the “n
 on-linear graviton” construction which enabled the negative-helicity com
 plex solutions of the Einstein vacuum equations to be encoded as curved tw
 istor spaces\, obtained by patching together portions of flat twistor spac
 e. But for some 40 years\, the so-called “googly problem” has frustrat
 ed the encoding of both positive and negative helicities—and hence real 
 space-times—into the same twistor framework. The procedures of “palati
 al twistor theory”\, which borrow ideas from quantum theory\, offer genu
 ine hope of a solution to this problem\, so that real space-times can be t
 reated using the complex-holomorphic procedures of twistor theory.
LOCATION:MR3
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