TY - JOUR

T1 - Zero temperature lattice Weinberg-Salam model for the values of the cutoff Λ∼1TeV

AU - Zubkov, M. A.

PY - 2012/4/2

Y1 - 2012/4/2

N2 - The lattice Weinberg-Salam model at zero temperature is investigated numerically. We consider the model for the following values of the coupling constants: the Weinberg angle θ W∼30°, the fine structure constant α∼(1/150), and the Higgs mass M H∼ 150GeV. We find that the fluctuational region begins at the values of the cutoff Λ above about 0.8 TeV. In this region the average distance between Nambu monopoles is close to their sizes. At Λ>1.1TeV the Nambu monopole currents percolate. Within the fluctuational region the considered definitions of the scalar field condensate give values that differ from the expected one 2M z/g z. We consider the given results as an indication that the nonperturbative effects may be present in the Weinberg-Salam model at the large values of the cutoff. Our numerical results were obtained on the lattices of sizes up to 163×32.

AB - The lattice Weinberg-Salam model at zero temperature is investigated numerically. We consider the model for the following values of the coupling constants: the Weinberg angle θ W∼30°, the fine structure constant α∼(1/150), and the Higgs mass M H∼ 150GeV. We find that the fluctuational region begins at the values of the cutoff Λ above about 0.8 TeV. In this region the average distance between Nambu monopoles is close to their sizes. At Λ>1.1TeV the Nambu monopole currents percolate. Within the fluctuational region the considered definitions of the scalar field condensate give values that differ from the expected one 2M z/g z. We consider the given results as an indication that the nonperturbative effects may be present in the Weinberg-Salam model at the large values of the cutoff. Our numerical results were obtained on the lattices of sizes up to 163×32.

UR - http://www.scopus.com/inward/record.url?scp=84860171330&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.85.073001

DO - 10.1103/PhysRevD.85.073001

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AN - SCOPUS:84860171330

SN - 1550-7998

VL - 85

JO - Physical Review D - Particles, Fields, Gravitation and Cosmology

JF - Physical Review D - Particles, Fields, Gravitation and Cosmology

IS - 7

M1 - 073001

ER -