Recent content by instanton

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    Graduate Does the AdS radius-cosmological constant relation depend on spacetime dimensions?

    In generic dimension d, the cosmological constant is related to AdS radius via \Lambda=-\frac{(d-1)(d-2)}{2\ell^2}.
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    Graduate Are we accelerating in the universe?

    OK, I'm not an expert in cosmology but I'm quite curious about it. Current observations tells us that the universe is accelerating (in what sense I don't quite understand). On the other hand, the Friedman equation says that the scale factor a(t) has a positive second time derivative provided the...
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