Homothetic vector field

In physics, a homothetic vector field (sometimes homothetic collineation or homothety) is a projective vector field which satisfies the condition:

{\mathcal {L}}_{X}g_{ab}=2cg_{ab}

where c is a real constant. Homothetic vector fields find application in the study of singularities in general relativity. They can also be used to generate new solutions for Einstein equations by similarity reduction.[1]

References

Exact Solutions of Einstein’s Field Equations. Cambridge University Press. 2003. pp. 163. ISBN 978-0-521-46136-8.

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[1] Exact Solutions of Einstein’s Field Equations. Cambridge University Press. 2003. pp. 163. ISBN 978-0-521-46136-8.

Homothetic vector field

See also

References