String breaking in SU(2) gauge theory with scalar matter fields

Abstract

We investigate the static potential in the confinement phase of the SU(2) Higgs model on the lattice, where this model is expected to have properties similar to QCD. We observe that Wilson loops are inadequate to determine the potential at large distances, where the formation of two color-neutral mesons is expected. Introducing smeared fields and a suitable matrix correlation function, we are able to overcome this difficulty. We observe string breaking at a distance $r_b\approx 1.8r_0$, where the length scale $r_0$ has a value $r_0\approx 0.5fm$ in QCD. The method presented here may lead the way towards a treatment of string breaking in QCD.

10 pages, eqs.(7),(9) corrected, small changes in numerics, new figures

References in corpus (5)

• Strong Coupling Model for String Breaking on the Lattice
• Scalar-gauge dynamics in (2+1) dimensions at small and large scalar couplings
• Dynamical Quark Effects in QCD
• Hadron spectroscopy and static quark potential in full QCD: A comparison of improved actions on the CP-PACS
• A First Taste of Dynamical Fermions with an O(a) Improved Action

Cited by in corpus (52)

• QCD forces and heavy quark bound states
• Observation of String Breaking in QCD
• On the generalized eigenvalue method for energies and matrix elements in lattice field theory
• Light Hadron Masses from Lattice QCD
• Real-time Dynamics in U(1) Lattice Gauge Theories with Tensor Networks
• Non-Abelian string breaking phenomena with Matrix Product States
• Real-time dynamics of string breaking
• Implementing quantum electrodynamics with ultracold atomic systems
• String breaking by light and strange quarks in QCD
• Real-time dynamics of string breaking in quantum spin chains
• Light hadron spectroscopy with O(a) improved dynamical fermions
• Brout-Englert-Higgs physics: From foundations to phenomenology
• Observing string breaking with Wilson loops
• Determination of the Static Potential with Dynamical Fermions
• Adjoint string breaking in 4d SU(2) Yang-Mills theory
• A High Precision Study of the QQ(bar) Potential from Wilson Loops in the Regime of String Breaking
• The non-perturbative QCD Debye mass from a Wilson line operator
• String Breaking in SU(2) Yang Mills Theory with Adjoint Sources
• Breaking of the adjoint string in 2+1 dimensions
• String Breaking as a Mixing Phenomenon in the SU(2) Higgs Model
• Zero temperature string breaking in lattice quantum chromodynamics
• Accessing directly the properties of fundamental scalars in the confinement and Higgs phase
• Two- and three-point functions in Landau gauge Yang-Mills-Higgs theory
• String Breaking in Four Dimensional Lattice QCD
• String Breaking and Monopoles: a Case Study in the 3D Abelian Higgs Model
• From Decay to Complete Breaking: Pulling the Strings in SU(2) Yang-Mills Theory
• Review on String Breaking - the Query in Quest of the Evidence
• A spectroscopical analysis of the phase diagram of Yang-Mills-Higgs theory
• What symmetry is actually broken in the Higgs phase of a gauge-Higgs theory?
• Center Dominance in SU(2) Gauge-Higgs Theory
• Phases of Gauge Theories
• Adjoint "quarks" on coarse anisotropic lattices: Implications for string breaking in full QCD
• Schwinger pair production and string breaking in non-Abelian gauge theory from real-time lattice improved Hamiltonians
• String breaking with Wilson loops?
• Overlap of the Wilson loop with the broken-string state
• The confining string and its breaking in QCD
• Effect of Color Screening on Heavy Quarkonia Regge Trajectories
• String breaking by dynamical fermions in three-dimensional lattice QCD
• On Witten's global anomaly for higher SU(2) representations
• The decay of unstable k-strings in SU(N) gauge theories at zero and finite temperature
• Monopole clusters, center vortices, and confinement in a Z(2) gauge-Higgs system
• The unreasonable effectiveness of effective string theory: the case of the 3d SU(2) Higgs model
• Fermi-Einstein condensation in dense QCD-like theories
• Determining Lines of Constant Physics in the Confinement Phase of the SU(2) Higgs Model
• To what distances do we know the confining potential?
• Some universal properties of the string breaking
• Real and Complex Fundamental Partial Compositeness
• Static potential and local color fields in unquenched lattice QCD${}_3$
• Zero Temperature String Breaking with Staggered Quarks
• The functional form of open Wilson lines in gauge theories coupled to matter
• When QCD strings can break
• Static potential in the SU(2) Higgs model