PeterDonis
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Centrifugal Force Reversal in Kerr Spacetime

Centrifugal Force Reversal in Kerr Spacetime

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PeterDonis
Sep 16
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Is Pressure A Source Of Gravity?

Is Pressure A Source Of Gravity?

In a previous , I posed the question “Does Gravity Gravitate?” and explained how, depending on how you interpreted the terms “gravity” and “gravitate”, one could answer the question either way, yes or no. This article will treat its title question in a similar fashion. :-)To be sure, this case is a bit simpler than the previous one, because there is only one term that can be given more than one meaning. The term “pressure” is clear: it means the spatial diagonal components of the stress-energy tensor. (More precisely, it means those components in the rest frame of a fluid, but we won’t...

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PeterDonis
May 14
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Slowly Lowering an Object in a Static, Spherically Symmetric Spacetime

Slowly Lowering an Object in a Static, Spherically Symmetric Spacetime

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PeterDonis
Apr 15
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