Question about graviton polarization tensor

  • Thread starter A_Andres
  • Start date
Hi I’m a student, and I started reading Zwiebach’s First Course in String Theory, but I still haven’t learned general relativity, only special relativity, and so I’m having some difficulties in understanding the polarization tensor for the perturbation of the Minkowski metric leading to the graviton. I understand the transverse traceless and symmetry condition, but I got stuck in an issue: shouldn’t a positivity condition be assumed for the off-diagonal symmetric components of the polarization tensor? What does it mean negative off-diagonal components?

Could someone help me with this?

Thanks,
Alessandro
 

Want to reply to this thread?

"Question about graviton polarization tensor" You must log in or register to reply here.

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top