Tagged Questions
6
votes
1answer
67 views
Is broken supersymmetry compatible with a small cosmological constant?
I understand that we can find the energy of a bosonic field in its vacuum state via
$E_{vac}^{(B)} = \sum_{\vec{k},s} \frac{1}{2}\hbar\omega_{\vec{k},s}^{(B)}$
and a fermionic one similarly,
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2
votes
0answers
54 views
de Sitter versus Minkowski QFT and cosmological constant
WMAP/Planck results confirm than we live in a de Sitter-like phase, i.e., a Universe with positive acceleration or positive cosmological constant! Therefore, I believe that a way to solve the ...
2
votes
1answer
202 views
Strings with negative pressure
This question is inspired by the following comment:
the strings in string theory are relativistic and on a large enough piece of world sheet, the internal SO(1,1) Lorentz symmetry is preserved. ...
