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Fine structure of the QCD string spectrum.
Using advanced lattice methods in quantum chromodynamics, three distinct scales are established in the excitation spectrum of the gluon field around a static quark-antiquark pair as the color sourceExpand
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The Yang-Mills gradient flow in finite volume
A bstractThe Yang-Mills gradient flow is considered on the four dimensional torus T4 for SU(N) gauge theory coupled to Nf flavors of massless fermions in arbitrary representations. The small volumeExpand
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The quark bag model
Abstract The quark bag model is reviewed here with particular emphasis on spectroscopic applications and the discussion of exotic objects as baryonium, gluonium, and the quark phase of matter. TheExpand
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Status of a minimal composite Higgs theory
We analyze three sets of gauge ensembles in our extended physics program of a particularly important BSM gauge theory with a fermion doublet in the two-index symmetric (sextet) representation of theExpand
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Monte Carlo study of SU(2) gauge theory at finite temperature
Abstract We find numerical evidence for the phase transition between the confinement phase and free Coulomb phase of SU(2) Yang-Mills theory with lattice cut-off. The search for the criticalExpand
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The lattice gradient flow at tree-level and its improvement
A bstractThe Yang-Mills gradient flow and the observable 〈E(t)〉, defined by the square of the field strength tensor at t > 0, are calculated at finite lattice spacing and tree-level in the gaugeExpand
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From surface roughening to QCD string theory
Surface critical phenomena and the related onset of Goldstone modes represent fundamental properties of the confining flux in Quantum Chromodynamics. New ideas on surface roughening and theirExpand
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Chiral symmetry breaking in nearly conformal gauge theories
We present new results on chiral symmetry breaking in nearly conformal gauge theories with fermions in the fundamental representation of the SU(3) color gauge group. The number of fermion flavors isExpand
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{ital Ab Initio} Study of Hybrid {ovr b}gb Mesons
Hybrid {ovr b}gb molecules in which the heavy {ovr b}b pair is bound together by the excited gluon field g are studied using the Born-Oppenheimer expansion and quenched numerical simulations. TheExpand
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The Equivalence of the top quark condensate and the elementary Higgs field
Abstract Several recent works suggested to replace the fundamental Higgs boson by a top quark condensate in analogy with the Nambu-Jona-Lasinio (NJL) mechanism. We show that the field theoreticallyExpand
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