Corrections to gauge theories in effective quantum gravity with a cutoff

We calculate the lowest order quantum gravity contributions to QED beta function in an effective field theory picture with a momentum cutoff. We use a recently proposed 4 dimensional improved momentum cutoff that preserves gauge and Lorentz symmetries. We find that there is non-vanishing quadratic contribution to the photon 2-point function but that does not lead to the running of the original coupling after renormalization. We argue that gravity cannot turn gauge theories asymptotically free.Comment: 11 pages, 1 figur

Fermion Condensate as Higgs substitute

A dynamical symmetry breaking model of electroweak interactions is investigated based on strongly interacting fermions. Vector-like fermions of different representations of the weak SU(2) form a symmetry breaking condensate and generate the lepton and quark masses. The weak gauge bosons get their usual standard model masses from a gauge invariant effective Lagrangian of a doublet scalar field composed of the new fermion fields. Gap equations are derived and the conditions for finding a symmetry breaking solution are presented. The parameters of the model are constrained further by perturbative unitarity. The oblique electroweak corrections only slightly constrain the model. It is shown that the new charged fermions are produced at the next linear colliders in large number and the cross section for the LHC is presented.Comment: 27 pages, 11 figure

OBLIQUE RADIATIVE CORRECTIONS IN THE VECTOR CONDENSATE MODEL OF ELECTROWEAK INTERACTIONS

Oblique radiative corrections are calculated to the parameter $S$ in a version of the standard model where the Higgs doublet is replaced by a doublet of vector bosons and the gauge symmetry is broken dynamically. We show that to each momentum scale there exists a domain of the masses of charged and neutral vector bosons where $S$ is compatible with the experiments. At a scale of 1 TeV this requires vector boson masses of at least $m_0 \approx$ 400--550 GeV, $m_+ \approx$ 200--350 GeV.Comment: 6 pages LATEX, 1 Latex figure include

Resonance Production of Three Neutral Supersymmetric Higgs Bosons at LHC

Multiple production of Higgs particles is essential to study Higgs self-couplings at future high-energy colliders. In this paper we calculated the resonance contributions to the production of three lightest neutral supersymmetric Higgs bosons in gluon fusion at LHC. The cross sections due to trilinear Higgs couplings is sizeable but the measurement of the quartic coupling hhhH(h) seems to be impossible.Comment: 8 pages, 3 figure

ρ\rho Parameter in the Vector Condensate Model of Electroweak Interactions

In the standard model of electroweak interactions the Higgs doublet is replaced by a doublet of vector bosons and the gauge symmetry is broken dynamically. This generates masses for the gauge bosons and fermions, as well as it fixes the interactions in the model. The model has a low momentum scale. In this note we show that the model survives the test of the $\rho$ parameter, and to each momentum scale $\rho$ chooses a possible range of vector boson masses.Comment: 3 pages, 2 figs, Te

Cutoff Regularization Method in Gauge Theories

A Lorentz and gauge symmetry preserving regularization method is discussed in four dimension based on momentum cutoff. We use the conditions of gauge invariance or equivalently the freedom of shift of the loop momentum to define the evaluation of the terms carrying even number of Lorentz indices, e.g. proportional to $k_{\mu}k_{ u}$. The remaining scalar integrals are calculated with a four dimensional momentum cutoff. The finite terms (independent of the cutoff) are free of ambiguities coming from subtractions in non-trivial cases. Finite parts of the result are equal with the results of dimensional regularization. The proposed method can be applied to various physical processes where the use of dimensional regularization is subtle or a physical cutoff is present. As a famous example it is shown that the triangle anomaly can be calculated unambiguously with this new improved cutoff

Examination of foie gras consumption habits

The goose liver is a special product produced by the force-fattened geese. The manufacturing process has thousands of years of history, which has grown to be a key sector for Hungary. First, we intended to get to know the producers side on force-feeding of geese in the past and present during our research – this serves as a basis of structured interviews with 10 workers in the administrating sector. On the other side, we investigated the consumers’ habits and opinions in relation with goose liver with a questionnaire. The first set of questions was directed specifically to consumer habits, including how often the product is consumed and why it is so. The second set of questions was intended to assess the knowledge on the process and other topic-related issues. Finally, we could establish that this type of products called ‘hungaricum’ is very important for Hungary because of the export and it also provides the basis for many farmers

Fermion Condensate Model of Electroweak Interactions

A new dynamical symmetry breaking model of electroweak interactions is proposed based on interacting fermions. Two fermions of different SU_{L}(2) representations form a symmetry breaking condensate and generate the lepton and quark masses. The weak gauge bosons get their usual standard model masses from a gauge invariant Lagrangian of a doublet scalar field composed of the new fermion fields. The new fermion fields become massive by condensation. It is shown that the new charged fermions are produced at the next linear colliders in large number. The model is a low energy one which cannot be renormalized perturbatively. For the parameters of the model unitarity constraints are presented.Comment: 8 pages, 1 figur