Upper bound on the cutoff in lattice Electroweak theory

Abstract

We investigate numerically lattice Weinberg - Salam model without fermions for realistic values of the fine structure constant and the Weinberg angle. We also analyze the data of the previous numerical investigations of lattice Electroweak theory. We have found that moving along the line of constant physics when the lattice spacing $a$ is decreased, one should leave the physical Higgs phase of the theory at a certain value of $a$. Our estimate of the minimal value of the lattice spacing is $a_c=[430\pm 40\mathrm{Gev}{]}^{-1}$.

Latex, 21 pages, 3 figures, to appear in JHEP

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Cited by in corpus (4)

• $Z_6$ symmetry of the Standard Model and Technicolor theory
• The fluctuational region on the phase diagram of lattice Weinberg - Salam model
• Effective constraint potential in lattice Weinberg - Salam model
• Zero temperature lattice Weinberg - Salam model for the values of the cutoff $\Lambda \sim 1$ TeV