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13
Quantum soliton mass corrections in SL(N) affine Toda field theory
, 1993
"... The first quantum mass corrections for the solitons of complex sl(n) affine Toda field theory are calculated. The corrections are real and preserve the classical mass ratios. The formalism also proves that the solitons are classically stable. ..."
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The first quantum mass corrections for the solitons of complex sl(n) affine Toda field theory are calculated. The corrections are real and preserve the classical mass ratios. The formalism also proves that the solitons are classically stable.
Theory of Neutral Particles: McLennanCase Construct for Neutrino, its Generalization, and a New Wave Equation
, 1995
"... Continuing our recent argument where we constructed a FNBWWtype spin1 boson having opposite relative intrinsic parity to that of the associated antiparticle, we now study eigenstates of the Charge Conjugation operator. Based on the observation that if φ (p L µ) transforms as a (0, j) spinor under ..."
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Cited by 5 (1 self)
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Continuing our recent argument where we constructed a FNBWWtype spin1 boson having opposite relative intrinsic parity to that of the associated antiparticle, we now study eigenstates of the Charge Conjugation operator. Based on the observation that if φ (p L µ) transforms as a (0, j) spinor under Lorentz boosts, then Θ [j] φ ∗ L (pµ) transforms as a (j, 0) spinor (with a similar relationship existing between φR (pµ) and Θ [j] φ ∗ R (pµ); where Θ [j] JΘ −1 [j] = −J ∗ with Θ [j] the well known Wigner matrix involved in the operation of time reversal) we introduce McLennanCase type (j, 0) ⊕ (0, j) spinors. Relative
Mean Field Methods for Cortical Network Dynamics
"... Abstract. We review the use of mean field theory for describing the dynamics of dense, randomly connected cortical circuits. For a simple network of excitatory and inhibitory leaky integrateandfire neurons, we can show how the firing irregularity, as measured by the Fano factor, increases with the ..."
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Abstract. We review the use of mean field theory for describing the dynamics of dense, randomly connected cortical circuits. For a simple network of excitatory and inhibitory leaky integrateandfire neurons, we can show how the firing irregularity, as measured by the Fano factor, increases with the strength of the synapses in the network and with the value to which the membrane potential is reset after a spike. Generalizing the model to include conductancebased synapses gives insight into the connection between the firing statistics and the highconductance state observed experimentally in visual cortex. Finally, an extension of the model to describe an orientation hypercolumn provides understanding of how cortical interactions sharpen orientation tuning, in a way that is consistent with observed firing statistics. 1
Replicadeformation of the SU(2)invariant Thirring model via solutions of the qKZ equation
, 1999
"... Dedicated to the memory of Moshé Flato The response of an integrable QFT under variation of the Unruh temperature has recently been shown to be computable from an Smatrix preserving (“replica”) deformation of the form factor approach. We show that replicadeformed form factors of the SU(2)invariant ..."
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Dedicated to the memory of Moshé Flato The response of an integrable QFT under variation of the Unruh temperature has recently been shown to be computable from an Smatrix preserving (“replica”) deformation of the form factor approach. We show that replicadeformed form factors of the SU(2)invariant Thirring model can be found among the solutions of the rational sl2type quantum KnizhnikZamolodchikov equation at generic level. We show that modulo conserved charge solutions the deformed form factors are in onetoone correspondence to the ones at level zero and use this to conjecture the deformed form factors of the Noether The form factor approach to massive integrable quantum field theories (QFTs) [9, 20] provides a powerful tool to compute exact matrix elements of local operators from the knowledge of the (factorized) Smatrix. To be precise, a form factor in this context is the matrix element of some local operator between the physical vacuum and a multiparticle
Graphic Design for Ceramic Tiles
"... The development of a computer based design system for ceramic tiles forms part of a BriteEuram project aimed at providing automated quality control for ceramic tile production. The design system is expected to provide a priori information about each tile design to the quality control inspection stat ..."
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The development of a computer based design system for ceramic tiles forms part of a BriteEuram project aimed at providing automated quality control for ceramic tile production. The design system is expected to provide a priori information about each tile design to the quality control inspection stations. The di#erences between graphic design for paper and graphic design for ceramic are discussed, and the additional information required by the quality control system is considered.
Anderson Localization for the Holstein model
, 2000
"... A onedimensional system of electrons on a lattice, interacting with a periodic potential, with period incommensurate with the lattice spacing and satisfying a Diophantine condition, is considered in the case of strong interaction. The Schwinger functions are computed and their asymptotic behaviour ..."
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A onedimensional system of electrons on a lattice, interacting with a periodic potential, with period incommensurate with the lattice spacing and satisfying a Diophantine condition, is considered in the case of strong interaction. The Schwinger functions are computed and their asymptotic behaviour is studied, proving Anderson localization. The decay of the Schwinger functions is shown to depend critically on the value of the chemical potential.
and
"... A formation zone intranuclear cascade model is applied to peripheral nucleusnucleus collisions. We calculate the excitation energies of prefragments, treat their further nuclear disintegration and introduce a model for nuclear deexcitation by photon emission. Results are compared to data on target ..."
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A formation zone intranuclear cascade model is applied to peripheral nucleusnucleus collisions. We calculate the excitation energies of prefragments, treat their further nuclear disintegration and introduce a model for nuclear deexcitation by photon emission. Results are compared to data on target associated particle production in nucleusnucleus collisions. We discuss implications of these models to the description of particle production in the fragmentation regions. Special emphasis is put on applications for air showers induced by cosmic ray nuclei and for residual nucleus production at heavy ion colliders.