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1 vote
0 answers
58 views

Black $p$-brane solution

Im trying to confirm that the metric (11) in the paper below is a solution to Einstein's equations (6). I tried to use the metric and extract $\lambda=(1-(r_+/r)^{D-3})^{1/2-\gamma/2(D-3)}$ and $R=r(1-...
TTT's user avatar
  • 63
7 votes
1 answer
307 views

Are there any additional fundamentals of physics in addition to space-time, energy, mass, and charge?

What do you consider the fundamental quantities in physics to be? By fundamentals, I mean quantities that cannot be described by a combination of other quantities. Fundamentals are things that just ...
John Petrovic's user avatar
2 votes
0 answers
77 views

does an accelerated charge would be slower relative to an neutral particle due to radiating and lose energy ? both in free fall

this part from this article https://en.wikipedia.org/wiki/Paradox_of_a_charge_in_a_gravitational_field "Putting together these two basic facts of general relativity and electrodynamics, we seem to ...
Nermeen El-Sayed's user avatar