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SUMMARY:Tetrad methods in numerical relativity - David Garfinkle (Oakland 
 University)
DTSTART:20191004T150000Z
DTEND:20191004T160000Z
UID:TALK130912@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Most numerical relativity simulations use the usual coordinate
  methods to put the Einstein field equations in the form of partial differ
 ential equations (PDE)\, which are then handled using more or less standar
 d numerical PDE methods\, such as finite differences.  However\, there are
  some advantages to instead using a tetrad (orthonormal) basis rather than
  the usual coordinate basis.  I will present the tetrad method and its num
 erical uses\, particularly for simulating the approach to a spacetime sing
 ularity.  I will end with open questions about which tetrad systems are su
 itable for numerical simulations.
LOCATION:Seminar Room 1\, Newton Institute
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