Special relativity

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four-vector 

  • can be transformed by Lorentz transformation
  • examples
    • space-time (ct,x,y,z)
    • four momentum (m,mv_1,mv_2,mv_3)
    • electromagnetic field

 

 

review of Maxwell's equation==    
Lorentz transformation and Maxwell's equation==      
Vacuum field equation and gravitational field equation==
  • gravitational potentail satisfies the following equation (Poisson's equation)
    \(\nabla^2 \phi = - 4 \pi G \rho\)
  • \(\rho\) is the matter density
  • in relativity theory, the metric plays the role of gravitational potential
   
energy-momentum tensor==
  • also called as stress-energy tensor
  • describe the densities and flows of energy and momentum
  • all forms of mass-energy can be sources of gravitational fields
  • the stress-energy tensor \(T_{\mu \nu}\) acts as a source of the gravitational field
     
relativistic Vacuum field equation==      
relativistic matter field equation==
  • Einstein field equation
    \(R_{\mu \nu} - {1 \over 2}g_{\mu \nu}\,R + g_{\mu \nu} \Lambda = {8 \pi G \over c^4} T_{\mu \nu}\)
   
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related items==    
encyclopedia==    
books== 4909919    
articles==    
question and answers(Math Overflow)==    
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