Scalar and fermion contributions to the vacuum energy [PDF]
Dimitrios MetaxasI consider a theory of a real scalar and a fermion field, with a Yukawa interaction and a potential term that admits two degenerate minima at the tree level. I calculate the quantum vacuum energy difference between these two vacua and I find a finite, non-zero result, with scalar and fermion contributions whose origin and physical significance I discuss.View original: http://arxiv.org/abs/1303.0470
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