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| bio | website | |
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| location | ||
| age | ||
| visits | member for | 4 months |
| seen | Mar 31 at 19:41 | |
| stats | profile views | 11 |
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Mar 19 |
answered | What can be the smallest chaotic system? |
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Jan 27 |
comment |
What does the graviton-matter Feynman scattering diagram look like? Yes, this diagram will contribute to physical processes. Just a comment: please remember that feynman diagrams are just perturbative calculation tools, this particular one will depend on the arbitrary gauge choise, so it self does not represent the full physical process. |
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Jan 27 |
answered | What does the graviton-matter Feynman scattering diagram look like? |
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Jan 24 |
comment |
Divergence in Supergravity N=8 Sugra is 4 dimensional theory. If you look at possible counter terms that may arise like R^2, R^3 i.e. different contractions of Riemann tensor. Some of them will be not allowed by different symmetries e.g. susy. The statement would be that on dimensional grounds counter terms at 7 loops in D=4 N=8 SUGRA, 5 loops in Maximally Supersymmetric SUGRA in 5 dimensions, will be allowed by the same symmetries. Therefore, if you find that one of them in absent, then there must be some new/unknown symmetry that kills it, which should also kill the other. |
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Jan 23 |
answered | What actually happens to a light ray on a Schwarzschild black hole horizon? |
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Jan 23 |
answered | Divergence in Supergravity |
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Jan 23 |
awarded | Informed |
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Jan 23 |
awarded | Supporter |
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Jan 22 |
awarded | Editor |
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Jan 22 |
revised |
Show that $\partial_\nu T^{\mu\nu} = - j_\nu F^{\mu\nu}$ added 205 characters in body |
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Jan 21 |
awarded | Teacher |
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Jan 21 |
answered | Show that $\partial_\nu T^{\mu\nu} = - j_\nu F^{\mu\nu}$ |
