Interface Tension of the Electroweak Phase Transition

Abstract

In our nonperturbative lattice investigation we study the interface tension of the finite-temperature electroweak phase transition. In this analysis the Higgs mass has been chosen to be about $35$ GeV. At the transition point of a finite volume system, tunnelling between the symmetric and the Higgs phase takes place. This phenomenon leads to a splitting of the ground state, which can be used to determine the interface tension. The result obtained this way agrees with the result of the two-coupling method and with the prediction of the perturbative approach.

10 pages, five figures in uuencoded PS format, Latex + epsf.sty

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• The electroweak phase transition at $m_H\simeq 80$ GeV from $L_t=2$ lattices
• Measuring the interface tension when the electroweak phase transition becomes weak
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