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CATEGORIES:Mathematical Physics Seminar
SUMMARY:On a Quantum Construction for Classical Space-Time
s: Palatial Twistor Theory - Roger Penrose (Oxford
)
DTSTART;TZID=Europe/London:20170307T160000
DTEND;TZID=Europe/London:20170307T170000
UID:TALK68469AThttp://talks.cam.ac.uk
URL:http://talks.cam.ac.uk/talk/index/68469
DESCRIPTION:Twistor theory was originally motivated from a des
ire to bring together basic mathematical ingredien
ts of quantum mechanics and relativistic space-tim
e structure. Many results were achieved\, includin
g the “non-linear graviton” construction which ena
bled the negative-helicity complex solutions of th
e Einstein vacuum equations to be encoded as curve
d twistor spaces\, obtained by patching together p
ortions of flat twistor space. But for some 40 yea
rs\, the so-called “googly problem” has frustrated
the encoding of both positive and negative helici
ties—and hence real space-times—into the same twis
tor framework. The procedures of “palatial twistor
theory”\, which borrow ideas from quantum theory\
, offer genuine hope of a solution to this problem
\, so that real space-times can be treated using t
he complex-holomorphic procedures of twistor theor
y.
LOCATION:MR3
CONTACT:Professor Maciej Dunajski
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