- #1
Cusp
- 26
- 1
If I had a perfect fluid I could write the stress energy tensor in the rest frame of the fluid as a nice diagonal tensor with [rho,p,p,p] and use this to solve the field equations.
Pressure is just random internal motions, so what happens if all the particles in my perfect fluid decide to move to the left? Clearly, now I could transofrm into a rest frame with T=[rho,0,0,0] and this would suggest that the resulting spacetime structure we get would be different?
Is this correct?
Pressure is just random internal motions, so what happens if all the particles in my perfect fluid decide to move to the left? Clearly, now I could transofrm into a rest frame with T=[rho,0,0,0] and this would suggest that the resulting spacetime structure we get would be different?
Is this correct?