The static potential in quantum chromodynamics

Appelquist, Thomas; Dine, Michael; Muzinich, I. J.

doi:10.1016/0370-2693(77)90651-7

Cited by 205 publications

(154 citation statements)

References 6 publications

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“…Appelquist, Dine and Muzinich [3] have shown that infrared divergences are encountered in V (−2,4) (R) which are not canceled by simply subtracting iterations of the lower order potentials. Thus, using the definition in Eq.…”

Section: Introductionmentioning

confidence: 99%

QCD heavy-quark potential to orderv2:One loop matching conditions

Manohar

Stewart

2000

Phys. Rev. D

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The one-loop QCD heavy quark potential is computed to order v 2 in the color singlet and octet channels. Several errors in the previous literature are corrected. To be consistent with the velocity power counting, the full dependence on |p + p ′ |/|p ′ − p| is kept. The matching conditions for the NRQCD one-loop potential are computed by comparing the QCD calculation with that in the effective theory. The graphs in the effective theory are also compared to terms from the hard, soft, potential, and ultrasoft regimes in the threshold expansion. The issue of off-shell versus on-shell matching and gauge dependence is discussed in detail for the 1/(m|k|) term in the potential. Matching on-shell gives a 1/(m|k|) potential that is gauge independent and does not vanish for QED.

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Section: Introductionmentioning

confidence: 99%

QCD heavy-quark potential to orderv2:One loop matching conditions

Manohar

Stewart

2000

Phys. Rev. D

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“…Such saturating configurations can lead to BFKL phenomena, color-glass models [22], and they could even provide the color-confining potential of valence quarks as seen in the AdS/QCD soft-wall model [23] using light-front holography [24][25][26] . We also note that 'H -diagrams (e.g., two vertical gluons, interacting via horizontal rungs, connecting a heavy quark and antiquark) which enter the heavy-quark potential [27] have a similar origin.…”

Section: Introductionmentioning

confidence: 80%

Possible multiparticle ridge-like correlations in very high multiplicity proton–proton collisions

2013

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The CMS collaboration at the LHC has reported a remarkable and unexpected phenomenon in very high-multiplicity high energy proton-proton collisions: a positive correlation between two particles produced at similar azimuthal angles, spanning a large range in rapidity. We suggest that this "ridge"-like correlation may be a reflection of the rare events generated by the collision of aligned flux tubes connecting the valence quarks in the wave functions of the colliding protons. The "spray" of particles resulting from the approximate line source produced in such inelastic collisions then gives rise to events with a strong correlation between particles produced over a large range of both positive and negative rapidity. We suggest an additional variable that is sensitive to such a line source which is related to a commonly used measure, ellipticity.

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“…There is only one dynamical variable ζ 2 . The AdS/QCD harmonic oscillator potential could emerge when one includes contributions from the exchange of two connected gluons; i.e., "H" diagrams [19]. We notice that U becomes complex for an excited state since a denominator can vanish; this gives a complex eigenvalue and the decay width.…”

Section: Effective Confinement Interaction From Higher Fock States Inmentioning

confidence: 93%

Light-front holography - A new approach to relativistic hadron dynamics and nonperturbative QCD

Téramond¹,

Brodsky²

2012

Proceedings of Sixth International Conference on Quarks and Nuclear Physics — PoS(QNP2012)

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The holographic mapping of gravity in AdS space to QCD, quantized at fixed light-front time, provides a precise relation between the bound-state amplitudes in the fifth dimension of AdS space and the boost-invariant light-front wavefunctions describing the internal structure of hadrons in physical space-time. In particular, the elastic and transition form factors of the pion and the nucleons are well described in this framework. The light-front AdS/QCD holographic approach thus gives a frame-independent first approximation of the color-confining dynamics, spectroscopy, and excitation spectra of relativistic light-quark bound states in QCD. More generally, we show that the valence Fock-state wavefunctions of the eigensolutions of the light-front QCD Hamiltonian satisfy a single-variable relativistic equation of motion, analogous to the nonrelativistic radial Schrödinger equation, with an effective confining potential which systematically incorporates the effects of higher quark and gluon Fock states. The proposed method to compute the effective interaction thus resembles the two-particle-irreducible functional techniques used in quantum field theory.

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The static potential in quantum chromodynamics

Cited by 205 publications

References 6 publications

QCD heavy-quark potential to orderv2:One loop matching conditions

QCD heavy-quark potential to orderv2:One loop matching conditions

Possible multiparticle ridge-like correlations in very high multiplicity proton–proton collisions

Light-front holography - A new approach to relativistic hadron dynamics and nonperturbative QCD

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