Large logarithmic rescaling of the scalar condensate: a subtlety with substantial phenomenological implications

نویسنده

  • P. Cea
چکیده

Lattice data, taken since 1998 near the critical line of a 4D Ising model, have been supporting the large logarithmic rescaling of the scalar condensate predicted in the alternative description of symmetry breaking proposed by Consoli and Stevenson. This conclusion has been challenged in a recent paper by Balog et al. In this paper we respond to the criticism of these authors, recapitulate the theoretical and numerical evidences in favour of the alternative interpretation of ‘triviality’ and reiterate our conclusion: ‘triviality’, by itself, cannot be used to place upper bounds on the Higgs boson mass.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Large logarithmic rescaling of the scalar condensate : new lattice evidences

Using two different methods, we have determined the rescaling of the scalar condensate Z ≡ Z ϕ near the critical line of a 4D Ising model. Our lattice data, in agreement with previous numerical indications, support the behavior Z ϕ ∼ ln(Λ), Λ being the ultraviolet cutoff. This result is predicted in an alternative description of symmetry breaking where there are no upper bounds on the Higgs bos...

متن کامل

N ov 2 00 3 Lattice measurement of the rescaling of the scalar condensate

We have determined the rescaling of the scalar condensate Z ≡ Z ϕ near the critical line of a 4D Ising model. Our lattice data, supporting previous numerical indications, confirm the behaviour Z ϕ ∼ ln(cutoff). This result is predicted in an alternative description of symmetry breaking where there are no upper bounds on the Higgs boson mass from 'triviality'. There are many computational and an...

متن کامل

Quark Effects in the Gluon Condensate Contribution to the Scalar Glueball Correlation Function

One-loop quark contributions to the dimension-four gluon condensate term in the operator product expansion (OPE) of the scalar glueball correlation function are calculated in the MS scheme in the chiral limit of nf quark flavours. The presence of quark effects is shown not to alter the cancellation of infrared (IR) singularities in the gluon condensate OPE coefficients. The dimension-four gluon...

متن کامل

QCD sum rules for ∆ isobar in nuclear matter

The self-energies of ∆ isobar propagating in nuclear matter are calculated using the finite-density QCD sum-rule methods. The calculations show that the Lorentz vector self-energy for the ∆ is significantly smaller than the nucleon vector self-energy. The magnitude of the ∆ scalar self-energy is larger than the corresponding value for the nucleon, which suggests a strong attractive net self-ene...

متن کامل

Destabilizing the gaugino condensate in modular invariant supergravity

We investigate the stability of the hidden sector gaugino condensate in a SL(2,Z)-invariant supergravity model inspired by the E8⊗E8 heterotic string, using the chiral superfield formalism. We calculate the Plancksuppressed corrections to the “truncated approximation” for the condensate value and the scalar potential. A transition to a phase with zero condensate occurs near special points in mo...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2005