Recent content by poetryphysics

Not sure if this post will be helpful, so please take it with a grain of salt, from someone still very much learning the ropes... I’ve often pictured the physics of time dilation this way (amalgamated from several sources): from the perspective of a ground based observer looking at a person in...

Thanks vanhees71 and Orodruin! Your posts have been a great help, and I think I’m more on my way to understanding the differences between these two notations now. I am reading Schutz GR, which uses one notation, and Srednicki QFT, which uses the other...

Thanks very much for your reply, this issue has been bothering me for days now! Is the problem that I should’ve written this as $$x^{\overline{\mu}}x_{\overline{\mu}}= \Lambda^{\overline{\mu}}_{\;\alpha}(\vec{v})x^{\alpha}\Lambda^{\beta}_{\;\overline{\mu}}(-\vec{v})x_{\beta}$$ I wasn’t sure...

Hi all, my name’s Gary, and I’m a PhD student at the CUNY graduate center, trying to do my dissertation on QCD theory (color glass condensate). Have been browsing here a bit over the years, and got around to making an account today!

Hi all, just had a question about tensor/matrix notation with the inverse Lorentz transform. The topic was covered well here, but I’m still having trouble relating this with an equation in Schutz Intro to GR... So I can use the following to get an equation for the inverse...