# Gravitational field caused by a charged particle

1. May 9, 2012

### ngkamsengpeter

I am new to General Relativity, so this question might sound silly. I know that the source of gravitational field is the stress-energy tensor. What I wonder is how do I find the spacetime metric, gmn caused by a stationary charged particle? What is the stress-energy tensor of a stationary charged particle? Is it just the T00 component exist?

Besides that, consider two particles in which the gravitational field caused by each particle will affect each other, how do I analyzed the motion of these two particles?

2. May 9, 2012

3. May 9, 2012

### ngkamsengpeter

Sorry if it confusing. What I mean is a static, not moving particle.

4. May 9, 2012

### Dickfore

If you took a course in Relativity, the first thing you should have learned is that motion is relative. So, define what you mean by non-moving particle.

5. May 9, 2012

### TrickyDicky

You seem to be looking for some electrovacuum solution, look up "Reissnerâ€“NordstrÃ¶m metric" in wikipedia, that is a non null solution for a charged mass.

6. May 9, 2012

### TrickyDicky

What I mention above is not exactly the same as a metric for a static particle, as Dickfore said there is no meaningful way of saying that an isolated particle is in motion (with constant velocity) or not under the relativity paradigm, so the metric I mentioned is rather a static electrovacuum solution for a charged body, and here "static" has a different, more technical meaning than "static" as in "not moving".

7. Oct 28, 2012

### quantumfoam

Hello ngkamsengpeter! Perhaps you may be provided some insight on the thread labelled Charge Particles and Gravity

8. Oct 28, 2012

### quantumfoam

I am new to general relativity too and I had asked a similar question.