“…Here we consider the attractive Bose-Hubbard model and free spinless fermions. In the absence of boson-fermion interactions, we obtain the boundary of the collapsed state of the attractive bosons. …”
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“…We consider the thermodynamics of chiral models in the mean-field approximation and discuss the relevance of the (frequently omitted) fermion vacuum loop. Within the chiral quark-meson model and its Polyakov loop extended version, we show that the fermion vacuum fluctuations can change the order of the phase transition in the chiral limit and strongly influence physical observables. …”
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“…We discuss a simulation algorithm for dynamical fermions, which combines the multiboson technique with the Hybrid Monte Carlo algorithm. …”
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“…This is particularly true for 4-fermion Physics. In this contribution, I review some of the most important theoretical achievements at LEP in understanding W and Z pair production, 4-fermion + 1 visible photon signatures and in solving problems related with gauge invariance. …”
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“…The talk concentrates on the precision measurements at the Z resonance, two fermion production above the Z, W+W- production, ZZ production, indirect limits on the Higgs mass, LEP contributions to the exploration of the CKM matrix, and on the LEP measurements of alpha_s.…”
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“…We investigate the Gross-Neveu model on the lattice at finite temperature and chemical potential in the limit of an infinite number of fermion flavours. We check the universality of the continuum limit of staggered and overlap fermions at finite temperature and chemical potential. …”
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“…They are mainly invoked to explain the various fermion mass hierarchies and forbid dangerous superpotential terms. …”
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“…The implications for various proposed scenarios of fermion number non-conservation is discussed.…”
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“…We observe the emergence of massive Majorana fermion mode at the topological state, massless Majorana-Weyl fermion mode during the topological quantum phase transition and Dirac fermion mode for the non-topological state. …”
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“…The next experimental step is the measurement of its properties, most notably its couplings to fermions. The SM Higgs boson couplings to fermions are proportional to the fermion masses thus measurements of these couplings probe nature of the fermion mass hierarchy. …”
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“…Results are presented on the ATLAS searches at the LHC for possible rare Higgs boson decays to pair of neutral, long-lived hidden-sector particles that lead to final states containing collimated lepton jets (LJ) or fermion anti-fermion pairs. No excess of events above the expected background has been observed on data collected in 2011 at a center of mass energy of 7 TeV and limits on the cross sections are set.…”
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“…The results of this simulation are encouraging, and further applications to four-fermion operators and to the heavy quark effective theory are proposed.…”
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“…We consider the top-bottom doublet in the background of the sphaleron for the realistic case of large non-degeneracy of fermion masses, in particular m_b=5 GeV and m_t=175 GeV. …”
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“…A new approach for dynamical fermion simulations is proposed.…”
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“…Recently, we showed that that band as well as line spectra, reveal a left-right symmetry in 4- and 2-fermion systems. We now show how a mass-conjugation explains the difference between atom- and antiatom-states in a stable 2-unit charge Coulomb system. …”
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“…In particular it is shown that in an absence of decoherence and under certain conditions fermion–fermion interaction is necessary for a ring–field entanglement to occur.…”
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“…The issues on generating fermion masses and flavor mixing are also discussed. …”
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“…First results on the radiative corrections of order $ \mathcal{O} $(N$_{f}$α$_{s}$α) are presented for the off-shell production of W or Z bosons at the LHC, where N$_{f}$ is the number of fermion flavours. These corrections comprise all diagrams at $ \mathcal{O} $(α$_{s}$α) with closed fermion loops, form a gauge-invariant part of the next-to-next-to-leading-order corrections of mixed QCD×electroweak type, and are the ones that concern the issue of mass renormalization of the W and Z resonances. …”
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“…The resulting theory embodies factorized gauge and supersymmetry anomalies, to be disposed of by fermion loops, and is determined by corresponding Wess-Zumino consistency conditions, aside from a quartic coupling for the gaugini. …”
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“…No interferences are neglected and no approximations of light fermion masses are made. We show that anomalous moments affect not only the cross section, but also the shape of the photon energy and angular distributions. …”
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